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Lubricant Additives - Friction Modifiers Series: Molybdenum Amine Complex (CAS 11096-84-5) is the ultra-low SAPS organomolybdenum additive - completing the Sinolook Mo-FM trilogy alongside MoDTP (CAS 9006-98-0) and MoDTC (CAS 97417-75-5). Its chemistry is fundamentally different from both predecessors: MoDTP and MoDTC are Mo(IV) complexes with sulphur-containing ligands (DTP or DTC) that deliver their performance via in-situ MoS₂ tribofilm formation. By contrast, Molybdenum Amine Complex is a Mo(VI)O₂²⁺ coordination compound with amine and fatty acid ester ligands - containing zero sulphur and zero phosphorus in its core structure. It delivers performance through Mo(VI) adsorption films on metal surfaces and Mo-based antioxidant redox cycling, rather than primarily through MoS₂ tribochemistry. This S-free / P-free composition gives it the lowest SAPS impact of any organomolybdenum FM grade - making it the preferred Mo additive for: wind turbine gear oils (where sulphur-active EP additives compete with DTC/DTP ligands), ultra-low-SAPS automotive specifications beyond C1, food-adjacent (H2-category) equipment lubricants, and green industrial lubricant formulations where sulphur-free chemistry is a design requirement. Sinolook FM Series: MoDTP · MoDTC · Molybdenum Amine Complex CAS 11096-84-5 (this).

★★★ ZERO SULPHUR · ZERO PHOSPHORUS · Ultra-Low SAPS · Mo(VI) Amine Ester · Mo 6–8% · N 1.5–2.5% · FP ≥170°C · Wind Turbine Gear Oil · Green Lubricants · AO + FM + AW · PAO/Ester Compatible · CAS 11096-84-5

Molybdenum Amine Complex

Mo Amine Ester / Molybdenum Amine–Ester Complex / 钼胺酯 / CAS 11096-84-5 / Mo(VI)O₂·(amine)(ester) / Zero S · Zero P / Mo 6–8% / N 1.5–2.5% / Dark Brown Liquid

CAS Number	11096-84-5
Chemical type	Mo(VI) dioxo complex with organic amine and fatty acid ester ligands. Core unit: MoO₂²⁺ (cis-dioxomolybdenum(VI)) coordinated by amine nitrogen(s) and/or carboxylate/ester oxygen(s). Image formula [(NH₃)₂MoO₂] represents the simplified inorganic core notation (NH₃ = amine ligand placeholder; MoO₂ = the cis-dioxo Mo(VI) centre with two Mo=O bonds). In the commercial product, NH₃ is replaced by the actual alkyl amine (e.g. oleylamine, diethylamine, or ethanolamine-derived ligands) and the ester component is provided by a fatty acid (e.g. oleic acid) reacted with the Mo precursor (ammonium molybdate or MoO₃). Result: a soluble organomolybdenum complex that dissolves in base oil without precipitation.
★★★ vs DTP/DTC types	Fundamental distinction: MoDTP and MoDTC are Mo(IV) sulphur-chelate complexes with high S content (8–18%). Mo Amine Complex is Mo(VI) with O/N coordination - contains no sulphur and no phosphorus. Consequence: zero S contribution to oil sulphur content; zero P contribution; lowest ash of all three Mo FM grades. MoO₂ complex forms a Mo-oxide/hydroxide chemisorbed film on metal surfaces (supplemented by MoSₓ under extreme tribological activation) rather than the pure MoS₂ tribofilm of DTC/DTP grades. Different mechanism, different SAPS profile, overlapping applications.
3D model colours	Grey = Mo (central atom); Red = O (the two MoO₂ oxo groups - the double-bonded Mo=O oxygens, present in all Mo(VI) dioxo complexes; these are the antioxidant-active Mo centres); Blue = N (amine ligand nitrogen atoms); White = H. The red O atoms are diagnostic: MoDTP has red O (ester O in –OPR₂) but also yellow S; MoDTC has no red O, only yellow S; Mo Amine Complex has red O (MoO₂) and blue N but no yellow S - the absence of yellow S spheres in the 3D model confirms this is the amine complex, not DTC or DTP.

★★★ SAPS Status

✅ S = 0% - ZERO SULPHUR ✅ P = 0% - ZERO PHOSPHORUS ⚠ Mo = 6–8% → minor sulphated ash (MoO₃ equiv.) ℹ N = 1.5–2.5% → N is NOT a SAPS element

The lowest SAPS footprint of all Sinolook Mo FM grades. At 0.1 wt% treat: S = 0, P = 0, Mo ash ~0.001–0.002%. Mo Amine Complex can be freely used in any ACEA C1/C2/C5 or ILSAC GF-6B formulation without consuming either the P or S budget - leaving both entirely available for ZDDP and base oil selection.

★ Functions

★★ PRIMARY: Antioxidant - Mo(VI)/Mo(IV) redox AO cycling ★ SECONDARY: Mild friction modification - Mo chemisorbed film ★ TERTIARY: Anti-wear - Mo surface protective film

Note: function priority differs from MoDTP/MoDTC (FM primary, AO secondary). Mo Amine Complex is primarily an antioxidant/multifunctional additive - its FM performance is real but less pronounced than MoS₂-forming grades at equal Mo content treat rate. Choose Mo Amine Complex when AO performance + minimum SAPS is the priority; choose MoDTC/MoDTP when MoS₂ FM is the primary requirement.

Mo Amine Complex Performance Mechanism - Mo(VI) Redox AO, Surface Film FM, and Zero-S/P Chemistry

Molybdenum Amine Complex (CAS 11096-84-5) delivers its performance through mechanisms fundamentally distinct from the sulphur-chelate Mo FM grades (MoDTC, MoDTP). Its MoO₂²⁺ core - a Mo(VI) dioxomolybdenum unit - is directly analogous to the active site in biological molybdenum enzymes (such as sulphite oxidase and nitrogenase auxiliary components), where Mo(VI)/Mo(IV) redox cycling is the functional chemistry. In the lubricant context, this redox cycling manifests as antioxidant activity through hydroperoxide decomposition: Mo(VI) oxidises lubricant hydroperoxides (ROOH) by accepting electrons (Mo(VI) → Mo(IV)), then Mo(IV) is re-oxidised by molecular O₂ or other oxidants back to Mo(VI) - a genuinely catalytic antioxidant cycle without the Mo being permanently consumed in each cycle. This is a higher-order AO mechanism than ZDDP (stoichiometric ROOH decomposition) and complements radical-scavenging AOs (phenolic, amine) that work on different parts of the oxidation chain.

🔬 MECHANISM ① (PRIMARY) - Antioxidation: Mo(VI)/Mo(IV) Catalytic Redox Cycling

Mo(VI) + ROOH → Mo(IV) + ROH + [O]

The Mo(VI) centre in the Mo=O bonds oxidises lubricant hydroperoxides (ROOH - the primary oxidative degradation species generated during oil ageing). Mo(VI) accepts two electrons from ROOH, reducing to Mo(IV) while converting ROOH to a less reactive alcohol (ROH). This is the same secondary AO mechanism as ZDDP but delivered by a Mo redox couple rather than Zn. Unlike ZDDP which is stoichiometrically consumed in this process, the Mo(VI)/Mo(IV) redox couple can theoretically cycle multiple times - giving Mo Amine Complex a higher effective antioxidant duration per mole of additive consumed.

Mo(IV) regeneration + radical scavenging

Mo(IV) is re-oxidised back to Mo(VI) by molecular O₂ under aerobic conditions in the lubricant, completing the AO redox cycle. Simultaneously, Mo(IV) species (MoO₂⁻, Mo(OH)₄ fragments) can act as free radical scavengers toward peroxyl radicals (ROO•), contributing a primary AO component in addition to the secondary (ROOH decomposition) function. The amine ligands in the complex contribute mild additional radical scavenging (N–H donation to ROO•, analogous to the amine AO mechanism of ADPA/NDPA), giving a genuinely dual primary+secondary AO action in a single molecule.

AO synergy in the four-component stack: Mo Amine Complex AO activity is distinct from and complementary to all other AO types in a formulation. In the reference PCMO DI package: Mo Amine Complex (Mo redox + amine radical scav.) + NDPA (N–H radical scav., 120–200°C) + L01-type (O–H radical scav., 60–150°C) + ZDDP (ROOH decomposition) - Mo Amine Complex supplements the ZDDP ROOH decomposition function while adding a radical scavenging component, reducing the required ZDDP treat rate while maintaining or improving total AO performance. ASTM D2272 RPVOT improvement: +200–500 min vs base formulation without Mo Amine Complex at 0.1 wt% treat rate.

⚙️ MECHANISM ② (SECONDARY) - Friction Modification: Mo Chemisorbed Adsorption Film

Mo-oxide/hydroxide adsorption film at mild conditions

Mo Amine Complex adsorbs onto metal surfaces through the Mo=O and amine N–H groups (physical/chemical adsorption driven by metal surface Lewis acid sites). At moderate temperatures (80–150°C), the Mo complex forms a thin Mo-oxide/hydroxide-based protective film that reduces metal-to-metal contact friction. This film is softer than the MoS₂ tribofilm of MoDTC/MoDTP but forms faster at lower temperatures (doesn't require tribological activation above 150°C) - giving Mo Amine Complex a cold-start friction advantage and lubricant-film protection during run-in.

MoSₓ film formation at high tribological severity

Under extreme tribological conditions (boundary lubrication, high asperity temperatures) or when used in base oils containing reactive sulphur (e.g. Group I, EP sulphur additives), the Mo(VI) in Mo Amine Complex can react with available sulphur from the lubricant to form MoSₓ (molybdenum oxysulphide) species. This gives a hybrid Mo-oxide/MoSₓ film with friction reduction approaching MoS₂ tribofilm performance in high-load situations. This distinguishes Mo Amine Complex from "pure" non-sulphur organomolybdenum AO additives - it can synergistically utilise available sulphur from other additive components to enhance its own FM performance.

FM performance vs MoDTC/MoDTP at equal Mo treat rate: At moderate temperatures (100–150°C), Mo Amine Complex provides comparable or slightly lower friction coefficient reduction vs MoDTC/MoDTP (because MoS₂ is a more effective FM layer than Mo-oxide films). At high temperatures (>180°C) with reactive S present, performance converges due to MoSₓ formation. Net recommendation: when MoS₂ FM performance is the primary requirement, choose MoDTC or MoDTP; when AO + mild FM + minimum SAPS is the goal, Mo Amine Complex is optimal.

📊 Complete Three-Grade Mo FM Comparison - Selecting the Right Organomolybdenum Grade

Property	MoDTP (9006-98-0)	MoDTC (97417-75-5)	★ Mo Amine (11096-84-5)
Mo content	5–10%	8–10%	6–8%
★★★ S content	8–14%	15–18%	✅ 0% - ZERO
★★★ P content	4–6%	✅ 0%	✅ 0% - ZERO
N content	0%	2.5–3.5%	1.5–2.5%
Flash Point	≥150°C	≥180°C	≥170°C
Mo ligand type	Mo(IV)–S/O (DTP)	Mo(IV)–S/N (DTC)	Mo(VI)=O · amine · ester (O/N)
Primary function	MoS₂ FM + AW + AO	MoS₂ FM + AO (no P)	★ AO primary + mild FM + AW
ACEA C1 (P≤0.05%)	Caution (has P)	✅ Preferred	✅ Zero P+S
Wind turbine gear oil	S conflicts with EP	S conflicts with EP	★★ Best choice
AO performance	Moderate (DTP)	Moderate (DTC)	★★ Strongest AO of three

Molybdenum amine complex molecular structure showing formula [(NH3)2MoO2] with Mo central grey atom bonded to two red oxygen atoms as cis-dioxo Mo VI unit and two blue nitrogen atoms as amine ligands with white hydrogen atoms, 3D ball-and-stick model with large grey molybdenum atom prominent red oxygen atoms and blue nitrogen atoms confirming zero sulphur zero phosphorus composition, background with solar panels wind turbines green agricultural fields at sunset representing eco-friendly green lubricant applications and industrial refinery for manufacturing context

Structure confirmed (CAS 11096-84-5): Formula [(NH₃)₂MoO₂] = simplified inorganic core; commercial product uses alkyl amines (oleylamine, ethanolamine, etc.) in place of NH₃. 3D model: grey = Mo; red = O (two Mo=O dioxo bonds - the diagnostic atoms absent in MoDTC's 3D model); blue = N (amine ligands); white = H. No yellow S atoms present - confirming zero-sulphur composition. Background: solar panels + wind turbines (renewable energy equipment lubrication) + green crop fields (eco-friendly / food-adjacent applications) + industrial refinery (manufacturing). The green/renewable energy background visually communicates this additive's niche in sustainable, zero-S/P green lubricant formulations.

📋 Physical Properties - Mo Amine Complex CAS 11096-84-5

Appearance	Dark brown viscous liquid / homogeneous paste
★ Mo content	6.0–8.0 wt% (typical 7%)
★★★ S content	0% - Zero sulphur
★★★ P content	0% - Zero phosphorus
N content ℹ	1.5–2.5 wt% (N ≠ SAPS)
Flash Point	≥170°C (COC)
Pour Point	≤ –5°C
★ Thermal stability	200°C / 4h - no significant decomposition
Shelf life	24 months (sealed, 5–30°C)

Technical Specification

★★★ S Content

Zero sulphur
No DTP or DTC sulphur ligand. Eliminates S contribution to finished oil sulphur - critical for wind turbine gear oils, food-adjacent lubricants, and S-free specification lubricants

★★★ P Content

Zero phosphorus
No DTP phosphorus ligand. Zero P contribution - allows free use in ACEA C1 (P ≤0.05%) without touching P budget, same as MoDTC but additionally S-free

★ Mo Content

6–8%

ICP-OES
Typical 7%. Slightly lower than MoDTC (8–10%) but AO function benefits from the full Mo concentration. Specify target Mo% for consistent AO performance.

ℹ N Content

1.5–2.5%

Combustion analysis
N is NOT a SAPS element. Lower N than MoDTC (2.5–3.5%). Contributes mild radical-scavenging AO activity from amine ligands (AO synergy with Mo redox).

★ Thermal Stability

200°C / 4h

No significant decomposition
Unique stability spec vs MoDTP/MoDTC. Important for wind turbine gear oil (large sump, long drain, 80–90°C continuous but peak to 110°C) and high-temp industrial service.

Parameter	Specification	Test Method	Technical Note
Appearance	Dark brown viscous liquid or homogeneous paste	Visual	Dark brown from Mo(VI) d–O charge transfer absorption. In paste form, homogeneous with no visible sediment - verify by hot storage (60°C/24h) for phase stability.
★ Mo Content	6.0–8.0 wt% (typ. 7%)	ICP-OES (ASTM D5185)	Primary performance index. Mo content determines both AO capacity (Mo redox cycles) and FM performance potential. Specify target Mo% range on order; lot-by-lot COA reports Mo ICP value.
★★★ S Content	0%	ASTM D4294 / ICP	Zero sulphur - no DTP/DTC ligand sulphur. Confirmed 0% at any treat rate. Critical for wind turbine gear oils (avoids S-EP additive competition), food-adjacent H2 lubricants, and S-free green formulation requirements.
★★★ P Content	0%	ICP-OES (ASTM D5185)	Zero phosphorus. Combined with zero S: ACEA C1/C2/C5, GF-6B, and any other low-SAPS specification - Mo Amine Complex places the lowest possible SAPS load of any organomolybdenum FM grade on the finished lubricant formulation.
N Content ℹ	1.5–2.5 wt%	Combustion analysis	N is NOT a SAPS element. Amine ligand N contributes mild radical scavenging AO activity. Slightly lower N than MoDTC (2.5–3.5%). Verify ASTM D130 copper corrosion at treat rate (amine N generally provides mild copper inhibition).
Flash Point	≥ 170°C	COC (ASTM D92)	Non-flammable (GHS FP >60°C); no ADR Class 3 transport restrictions. COC method (open cup) vs MoDTP/MoDTC PM (closed cup) - COC FP typically 10–20°C higher than equivalent PM FP, so actual safety margin is comparable to MoDTC (PM ≥180°C).
Pour Point	≤ –5°C	ASTM D97	Good low-temperature fluidity; slightly higher PP than MoDTC (≤–10°C) - warm to 20–30°C for ease of transfer in cold climates; dissolves readily in base oil at ambient.
★ Thermal Stability	200°C / 4h - stable	TGA / oven aging	Unique quantified thermal stability specification (not provided for MoDTP/MoDTC). Mo(VI)=O complexes are inherently thermally robust - the Mo=O bond (BDE ~450 kJ/mol) is highly stable vs Mo–S bonds in DTP/DTC (BDE ~300 kJ/mol). No colour change or Mo precipitation after 4h at 200°C in mineral base oil.
Packaging	200 kg drum · 1000 L IBC · ISO tank bulk	-	Shelf life 24 months sealed at 5–30°C. Sealed storage prevents moisture uptake; avoid strong oxidants, acids, alkalis in storage proximity. Stack ≤3 drums high.

COA per lot: Mo content (ICP, 6.0–8.0%) · N content (1.5–2.5%) · S content (confirmed 0%) · P content (confirmed 0%) · Appearance · Flash point (COC ≥170°C) · Pour point (≤–5°C) · Water content (KFT). Thermal stability report (200°C/4h) available on request. TDS and SDS (GHS) per shipment.

Applications & Dosage Guidance

1. Wind Turbine Gear Oils - The Defining Application

0.05–0.2 wt% Zero S - no EP conflict

Wind turbine main gearboxes (IEC 61400-4, ISO 281, AGMA 6006) are among the most demanding gear lubrication applications globally - operating at high loads, variable speeds, and low temperatures (–20°C to +90°C), with 5-year drain intervals and critical reliability requirements (>95% uptime demanded). The standard wind turbine gear oil specification (AGMA 9005-F16, ISO 12925-1 CKD, major OEM specs from Vestas, GE, Siemens-Gamesa) requires: EP/AW protection (from S-P or boron EP additives), excellent oxidation stability, low-temperature performance, and foam control. Here is Mo Amine Complex's critical advantage: its zero-sulphur chemistry avoids the well-documented antagonism between sulphur-containing organomolybdenum additives (MoDTC/MoDTP) and the sulphur-active EP additives (active sulphur, sulphurised esters) used in wind turbine gear oils. Active-sulphur EP compounds react preferentially with the reactive sulphur ligands of MoDTC/MoDTP, consuming both additives without delivering full performance. Mo Amine Complex delivers Mo-based AO/FM benefit without this competition - the zero-S structure does not interfere with EP additive chemistry. At 0.05–0.15 wt%, Mo Amine Complex measurably extends oil oxidation life (ASTM D943 TOST) and reduces asperity contact friction in wind turbine gear oil, directly supporting the required 5-year drain interval.

2. Automotive Engine Oils - Ultra-Low SAPS & Fuel Economy

0.05–0.15 wt% Zero S + Zero P

In automotive PCMO engine oils, Mo Amine Complex complements or replaces MoDTC in ultra-strict SAPS scenarios where both P and S need to be minimised - not just P. Standard ACEA C1 (P ≤0.05%, S ≤0.2%) is already served well by MoDTC (P-free, S=15–18%). But when the formulation approaches the ACEA C1 S limit due to base oil or ZDDP sulphur contribution, switching from MoDTC (S=15–18%) to Mo Amine Complex (S=0%) liberates 0.015–0.018% of S budget headroom per 0.1 wt% treat rate - potentially enabling a formulator to use a higher-sulphur (cheaper, better AW performance) ZDDP grade while still meeting total S limits. Combined SAPS contribution at 0.1 wt%: zero P, zero S (additive contribution), and ~0.001–0.002% Mo-derived sulphated ash - the absolute minimum SAPS footprint of any Mo FM option. For ILSAC GF-6B (0W-16 fuel economy specification, extremely tight P budget), Mo Amine Complex is highly compatible.

3. Industrial Lubricants - Turbine, Hydraulic, Compressor

0.05–0.2 wt% AO + mild FM

For industrial lubricants where the primary organomolybdenum benefit sought is antioxidation rather than friction modification - turbine oils (IEC 60296, GEK-32568), hydraulic oils (DIN 51524-2/3), and compressor oils (DIN 51506) - Mo Amine Complex at 0.05–0.15 wt% delivers Mo(VI) redox AO cycling that supplements the standard amine + phenolic AO stack. Its thermal stability specification (200°C/4h, no decomposition) is particularly relevant for turbine oil sump temperatures and high-discharge compressor oil hot-spots. In turbine oil combined with NDPA 0.2 wt% + L01-type 0.1 wt%, adding Mo Amine Complex 0.1 wt% extends ASTM D2272 RPVOT induction time by 300–600 min - a meaningful improvement for extended-service turbine oil approvals (GEK-32568 requires >3000 min; target >4000 min for premium grades). The zero-S chemistry also avoids sulphur-driven copper corrosion in turbine systems (ASTM D130 copper strip is a critical turbine oil test).

4. Metalworking Fluids & Food-Adjacent Applications

0.1–0.3 wt% Food-adjacent H2

In metalworking fluids (MWF) - particularly for aluminium, titanium, and magnesium alloy machining where sulphur and phosphorus-active additives can stain or chemically attack the workpiece surface - Mo Amine Complex's zero-S / zero-P composition avoids the workpiece discolouration and chemical reactivity issues associated with MoDTC or MoDTP. At 0.1–0.3 wt% in neat cutting oil, the Mo(VI) adsorption film on the tool and workpiece surface provides lubricity and boundary friction reduction without S or P chemistry. For food-adjacent (H2 category) equipment lubricants under NSF H2 or equivalent national food safety standards (NSF/ANSI 61, EU EC 1935/2004 adjacent), Mo Amine Complex's lower toxicity profile (compared to sulphur-rich DTC/DTP compounds) and fully inorganic/amine-ester composition makes it more compatible with food-proximity equipment lubrication guidelines - verify with regulatory consultant for specific H2 application approval.

Application	Treat Rate	S / P contribution	Key Benefit / Standard
Wind turbine gear oil (AGMA 6006 / OEM)	0.05–0.15 wt%	S=0%, P=0% ✅✅	Zero-S avoids S-EP additive conflict; AO extends 5-yr drain interval; ASTM D943 TOST improvement
ACEA C1 / GF-6B ultra-low-SAPS engine oil	0.05–0.15 wt%	S=0%, P=0% ✅✅	Lowest SAPS Mo FM option; frees both P and S budget for ZDDP and base oil; Seq. VIE FEI improvement
ACEA C3 / API SP PCMO (S-budget tight)	0.05–0.15 wt%	S=0%, P=0% ✅✅	Use when MoDTC's S (15–18%) would push total S near ACEA limit; Mo Amine Complex frees S budget for base oil and ZDDP selection
Turbine / hydraulic / compressor oil (AO priority)	0.05–0.2 wt%	S=0%, P=0% ✅✅	Mo(VI) AO: RPVOT +300–600 min; 200°C/4h thermal stability; zero-S avoids Cu corrosion (D130) in turbine systems
MWF - Al/Ti/Mg alloy machining	0.1–0.3 wt%	S=0%, P=0% ✅✅	Avoids workpiece staining/attack from S/P actives; Mo adsorption FM at tool/workpiece interface; surface finish improvement
Food-adjacent (H2) equipment lubricants	0.05–0.1 wt%	S=0%, P=0% ✅✅	Lower toxicity than DTC/DTP grades; amine-ester composition compatible with H2 guideline requirements; verify with regulatory consultant for specific approval

Frequently Asked Questions

Q: Why is Mo Amine Complex specifically preferred over MoDTC for wind turbine gear oil?

Wind turbine gear oils require a combination of EP (extreme-pressure) protection from active-sulphur or S-P additives AND oxidation stability from Mo additives. The critical issue is that sulphur-containing Mo additives (MoDTC: S=15–18%; MoDTP: S=8–14%) chemically interact with the active-sulphur EP additives in wind turbine gear oil formulations. Active sulphur compounds (e.g. sulphurised esters, polysulphides) compete for the same tribochemical reaction sites and can exchange sulphur with the DTC/DTP ligands - partially decomposing the Mo complex before it reaches the metal surface, reducing its FM and AO efficacy. Additionally, high-sulphur Mo additives can shift the carefully balanced EP film chemistry, potentially reducing EP protection. Mo Amine Complex, with zero sulphur in its structure, undergoes no chemical interaction with sulphur-EP additives - it forms its Mo-oxide adsorption film and conducts Mo redox AO cycling entirely independently of the sulphur EP chemistry. Tribology tests on wind turbine gear oil model formulations consistently show that Mo Amine Complex delivers better AO extension (ASTM D943 TOST) and consistent friction reduction without compromising FZG EP load capacity, compared to equivalent Mo content of MoDTC in the same formulation.

Q: How does Mo Amine Complex antioxidant performance compare with standard amine AOs (NDPA, ADPA)?

Mo Amine Complex and amine AOs (NDPA, ADPA) both contain N–H groups that contribute radical scavenging, but they differ in their dominant AO mechanism and operating conditions. Amine AOs (ADPA/NDPA) are primarily radical scavengers - their N–H groups donate hydrogen to peroxyl radicals (ROO•) via the diarylamine radical mechanism. Mo Amine Complex is primarily a ROOH decomposer via the Mo(VI)/Mo(IV) redox cycle, with secondary N–H radical scavenging from the amine ligands. This mechanistic difference means the two are genuinely complementary rather than redundant: NDPA prevents radical chain propagation (primary AO); Mo Amine Complex destroys the hydroperoxide products of residual radical activity (secondary AO), preventing autocatalytic oxidation acceleration. The combination (Mo Amine Complex 0.1 wt% + NDPA 0.2–0.3 wt% + L01-type 0.3–0.4 wt% + ZDDP 0.5–0.7 wt%) is the recommended full AO stack for ACEA C3 engine oils where all three AO types cooperate across all temperature ranges and both primary and secondary oxidation pathways.

Q: When should I choose Mo Amine Complex vs MoDTC vs MoDTP?

Choose Mo Amine Complex (CAS 11096-84-5) when: (1) zero sulphur is required - wind turbine gear oil (EP additive compatibility), food-adjacent H2 lubricants, S-free formulation requirements; (2) the primary goal is Mo-based antioxidation rather than maximum MoS₂ FM performance; (3) both P and S budget are at their limits and you need the minimum SAPS Mo FM option; (4) aluminium/titanium machining fluids where S/P actives cause workpiece reactions. Choose MoDTC (CAS 97417-75-5) when: zero P is needed (ACEA C1/GF-6B) and maximum MoS₂ FM (fuel economy) is the primary goal - MoDTC's higher Mo content (8–10%) and MoS₂ tribofilm delivers the best FM performance of the three. Choose MoDTP (CAS 9006-98-0) when: FM + AW dual function is needed (MoDTP's DTP AW film supplementing ZDDP), P budget allows (ACEA C3/SP), and sulphur is not a constraint. Contact Sinolook with your target specification, base oil type, and SAPS budget for a specific grade recommendation and formulation guidance.

Technical & Regulatory References

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Key Test Methods
ICP-OES D5185 (Mo, N content; P=0 confirmed; S=0 confirmed) · ASTM D92 COC (FP ≥170°C) · ASTM D97 (PP ≤–5°C) · ASTM D445 (KV @40°C) · KFT (water content) · TGA / oven aging (thermal stability 200°C/4h) · ASTM D2272 RPVOT (AO performance - primary functional test) · ASTM D943 TOST (long-duration oxidation - wind turbine gear oil target >3000h) · ASTM D6186 PDSC (AO screening) · D6971 RULER (AO reserve monitoring) · ASTM D4172 Four-Ball WSD (AW, with ZDDP co-additive) · ASTM D130 (copper corrosion - zero-S avoids Cu corrosion issues) · FZG (gear efficiency and EP load capacity - wind turbine application)

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Applicable Standards
Wind turbine: AGMA 6006 ★★ · AGMA 9005-F16 · ISO 12925-1 CKD · IEC 61400-4 · Vestas / GE / Siemens-Gamesa OEM gear oil specs · Engine oils: ACEA C1/C2/C3/C5 (zero S+P ✅✅) · ILSAC GF-6A/GF-6B · API SP · Turbine (industrial): IEC 60296 · GEK-32568 · DIN 51515 · Hydraulic: DIN 51524-2/3 HLP · Compressor: DIN 51506 VDL · MWF: ISO 6743-7 MH (S-free, P-free) · Aerospace Al/Ti/Mg alloy machining · Food-adjacent: NSF H2 (verify per specific application)

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Regulatory & Compliance
CAS 11096-84-5 · EINECS registered · REACH compliant · TSCA listed · ✅ S = 0% confirmed (no DTP/DTC ligand) · ✅ P = 0% confirmed (no phosphate) · ⚠ Mo = 6–8% → minor Mo-derived sulphated ash (MoO₃, ~0.001–0.002% at 0.1 wt% treat) · N = 1.5–2.5% → NOT a SAPS element · FP ≥170°C COC - non-flammable; no ADR Class 3 · GHS SDS: GHS08 (Mo compounds - moderate health risk if ingested; standard PPE: gloves, goggles, ventilation) · Not currently food-grade H1 (verify H2 status with regulatory consultant) · 24-month shelf life sealed at 5–30°C

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Related Products - Complete Mo FM & AO Stack
Friction Modifiers: MoDTP CAS 9006-98-0 ✅ (FM+AW, has S+P) · MoDTC CAS 97417-75-5 ✅ (FM, no P, has S) · Mo Amine Complex CAS 11096-84-5 ✅ (this) - Zero S + Zero P → Amine AO ✅: ADPA (CAS 68411-46-1) · NDPA (CAS 36878-20-3 / 27177-41-9) → Phenolic AO ✅: BHT · DTBP · HP-136/L01/L57 → ZDDP AW/AO ✅: Full range

Mo Amine Complex · CAS 11096-84-5 · Mo 6–8% · S=0% · P=0% · N 1.5–2.5% · FP ≥170°C · PP ≤–5°C · 200°C Thermal Stability · Ultra-Low SAPS · Wind Turbine · Green Lubricants · 200 kg Drum / IBC / ISO Tank

Request Pricing, Zero-S/P Formulation Guidance & Technical Support

Specify application (wind turbine gear oil, ACEA C1/C5 engine oil, turbine oil, food-adjacent, MWF), base oil type, current Mo FM grade (if switching from MoDTC/MoDTP), and total S/P budget. We provide: COA with Mo/N ICP data and S=0%/P=0% confirmation; wind turbine gear oil compatibility guidance (S-EP additive interaction analysis); AO stack formulation guidance (Mo Amine + NDPA + L01 + ZDDP); RPVOT and TOST performance predictions. Samples (100–500 mL) for wind turbine gear oil TOST and ASTM D2272 RPVOT screening.

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Friction Modifiers / Organomolybdenum Series:

MoDTP (has S+P) ✅ · MoDTC (no P, has S) ✅ · Mo Amine Complex (Zero S + Zero P) ✅ (this) → ZDDP ✅ · Phenolic AO ✅ · Amine AO ✅

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