What Is SPAN 80 (Sorbitan Monooleate)?
SPAN 80, the trade name for Sorbitan Monooleate (CAS 1338-43-8), is a nonionic surfactant produced by esterifying sorbitol with oleic acid (C18:1). During esterification, sorbitol undergoes partial dehydration to form a cyclic sorbitan ring, which is then mono-esterified with oleic acid to yield the anhydrosorbitol partial ester product. The resulting SPAN 80 chemical structure (molecular formula C₂₄H₄₄O₆, MW 428.60 g/mol) combines a relatively small hydrophilic sorbitan head group with a long lipophilic C18 unsaturated oleate tail - giving SPAN 80 its defining HLB value of 4.3 and strong overall lipophilic character.
The low SPAN 80 HLB value of 4.3 classifies it as an oil-soluble, lipophilic surfactant optimized for water-in-oil (W/O) emulsification - systems where water droplets are dispersed into a continuous oil phase. This makes SPAN 80 the emulsifier of choice in petroleum drilling fluids, invert-emulsion metalworking fluids, oil-based agrochemical emulsifiable concentrates, W/O cosmetic creams and ointments, and antirust protective coatings. It is also widely used in combination with the Tween (polysorbate) series - most commonly SPAN 80 and Tween 80 - to blend custom intermediate HLB values for O/W emulsion applications.
SPAN 80 physical properties: amber to brown viscous liquid at room temperature (density ~0.986 g/cm³ at 25 °C); oil-soluble, dispersible in water; mild, fatty odor. INCI name: Sorbitan Oleate. Stable at high temperature and across a wide pH range; compatible with all ionic surfactant types. SinoLook Chem manufactures and exports SPAN 80 from ISO 9001-certified facilities, with food-grade production available on request.
Key Performance Advantages of SPAN 80
Six core performance properties make SPAN 80 (Sorbitan Monooleate) one of the most widely used nonionic emulsifiers in industrial and specialty formulations worldwide.
💧 Strong W/O Emulsifying Ability
With an HLB of 4.3, SPAN 80 is among the most effective nonionic emulsifiers for water-in-oil (W/O) emulsions. It strongly adsorbs at the oil-water interface, dramatically reducing interfacial tension and forming stable emulsions resistant to coalescence, phase separation, and creaming - even under high temperature, shear, and salinity conditions encountered in petroleum and industrial applications.
🔗 SPAN 80 + Tween Series HLB Blending
SPAN 80 is the natural blending partner for Tween 80 (HLB 15.0), Tween 20 (HLB 16.7), and Tween 60 (HLB 14.9). By combining SPAN 80 with a high-HLB polysorbate, formulators can dial in any target HLB between 4.3 and 16.7 to achieve optimal emulsification for a specific oil phase - without switching surfactant classes or sacrificing compatibility.
🌡️ Thermal & Chemical Stability
Stable at elevated processing temperatures (up to ~150 °C), resistant to moderate acids and alkalis, and maintains performance over long storage periods (24 months). Reliable in demanding environments including downhole drilling conditions, high-temperature metalworking coolants, and outdoor agrochemical spray applications exposed to UV radiation and temperature fluctuation.
🔗 Broad Oil-Phase Compatibility
Freely miscible with mineral oils, vegetable oils, synthetic esters, paraffins, waxes, and most hydrophobic organic solvents. Nonionic character means no incompatibility with anionic, cationic, or other nonionic surfactants, or with salts, electrolytes, and hard water - minimizing formulation restrictions in complex multi-component systems.
🌿 Low Irritation & Mild Toxicity Profile
Nonionic structure gives SPAN 80 a low skin irritation profile. Mild ecotoxicological and oral toxicity profile. INCI name Sorbitan Oleate is an approved cosmetic ingredient under EU Cosmetics Regulation. Food-grade SPAN 80 complies with E493 (EU) and 21 CFR 172.842 (US FDA). Low acute hazard, not classified as flammable liquid (flash point >100 °C).
🛡️ Anti-static, Dispersing & Lubricity
Beyond emulsification, SPAN 80 functions as an anti-static agent in plastic and polymer processing, a dispersant for pigments and solids in oil-based systems, and a lubricity additive reducing friction in metalworking and textile oiling. Multifunctional character enables formulators to reduce total additive count in complex formulations.
📌 SPAN 80 vs Tween 80 - Key Differences & HLB Blending Guide
Both SPAN 80 and Tween 80 are sorbitan oleate-based nonionic surfactants, but differ fundamentally in HLB and solubility. SPAN 80 (HLB 4.3) is oil-soluble and stabilizes W/O emulsions. Tween 80 / Polysorbate 80 (HLB 15.0) is water-soluble and stabilizes O/W emulsions. Tween 80 is produced by ethoxylating SPAN 80 - grafting polyethylene oxide chains onto its free hydroxyl groups - which dramatically shifts the HLB from 4.3 to 15.0.
HLB Blending Formula: HLBblend = (wSPAN80 × 4.3 + wTween80 × 15.0) / (wSPAN80 + wTween80)
Practical blend ratios (SPAN 80 : Tween 80 by weight):
Target HLB 6 → ~83% SPAN 80 + ~17% Tween 80 | Target HLB 8 → ~65% SPAN 80 + ~35% Tween 80 | Target HLB 10 → ~47% SPAN 80 + ~53% Tween 80 | Target HLB 12 → ~28% SPAN 80 + ~72% Tween 80. Contact our technical team with your oil phase composition for a specific blend recommendation and free SPAN 80 + Tween 80 sample set.
SPAN 80 Uses & Industrial Applications
SPAN 80's low HLB, oil-solubility, thermal stability, and nonionic character make it a critical emulsifier and functional additive across six major industrial sectors. Below are the key SPAN 80 uses in each application area.
Petroleum & Oilfield
Primary emulsifier in invert-emulsion (oil-based) drilling fluids, stabilizing water droplets in the oil phase under extreme downhole temperatures, pressures, and salinities. Also used in completion fluids, packer fluids, and crude oil emulsion treatment. Compatible with standard organophilic clay and weighting agents in OBM formulations. SPAN 80 water-in-oil emulsion performance makes it indispensable in petroleum drilling operations.
Agrochemical Formulations
Emulsifier and dispersant in oil-based pesticide emulsifiable concentrates (EC), emulsifiable suspension concentrates, and oil dispersion (OD) formulations. Enables stable dilution of oil-based active ingredients in water at point of use. Used as a carrier emulsifier for oil-based adjuvant systems and as a slow-release formulation component. Compliant with agrochemical registration requirements in major markets.
Metalworking & Lubricants
Emulsifier in invert-type metalworking cutting oils, grinding fluids, and rolling coolants. The oleate tail of SPAN 80 contributes lubricity and mild corrosion inhibition via surface film adsorption on ferrous and non-ferrous metals. Used in antirust oil formulations, rust-preventive coatings, gear oils, and greases. SPAN 80 density (~0.986 g/cm³) and viscosity profile are well suited to oil-phase metalworking fluid formulation.
Cosmetics & Personal Care
W/O emulsifier for heavy creams, ointments, cold creams, and water-resistant sunscreens. INCI name Sorbitan Oleate is widely accepted in cosmetic formulations. Provides water-resistance properties for leave-on products. Used in oil-based serums, makeup foundations requiring slow-release active delivery, and barrier creams. When blended with Tween 80, enables O/W emulsions with controllable skin feel and texture.
Textile Processing
Textile oiling agent and fiber lubricant in spinning, texturing, and weaving operations. Reduces inter-fiber friction and static buildup, improving yarn quality and reducing breakage rates. Used as emulsifier in oil-based textile finishing baths and as a softening agent in synthetic fiber processing. Anti-static function reduces dust attraction and static discharge in high-speed fiber processing lines.
Plastics & Polymer Processing
Anti-static additive and mold-release agent in PVC, polyolefins, and engineering plastics. Reduces surface resistivity by forming a thin hygroscopic film that dissipates static charge. Used as dispersant for solid fillers and pigments in masterbatch and compounding applications, and as a processing aid improving melt flow and surface finish. Compatible with most standard polymer processing additives.
Technical Specifications & CoA
Our SPAN 80 is manufactured using high-purity sorbitol and oleic acid under controlled esterification conditions. Every batch is tested against the specifications below. A full Certificate of Analysis (CoA), SPAN 80 SDS/MSDS (GHS-compliant), and Technical Data Sheet (TDS) are issued with every shipment.
SPAN 80 (Sorbitan Monooleate, CAS 1338-43-8) - Quality Specifications & Typical CoA
| Parameter | Specification | Typical CoA Result |
|---|---|---|
| Appearance (25 °C) | Amber to brown viscous liquid | Amber viscous liquid |
| HLB Value | 4.3 ± 0.2 | 4.2 – 4.4 |
| Acid Value, mg KOH/g | ≤ 8.0 | 3.0 – 6.0 |
| Saponification Value, mg KOH/g | 145 – 160 | 150 – 157 |
| Hydroxyl Value, mg KOH/g | 190 – 220 | 198 – 215 |
| Water / Moisture, wt% | ≤ 1.5% | 0.3 – 0.8% |
| Density (25 °C), g/cm³ | ~0.980 – 0.995 g/cm³ | ~0.986 g/cm³ |
| Viscosity (25 °C), mPa·s | 800 – 1500 mPa·s | 950 – 1200 mPa·s |
| Heavy Metals | ≤ 10 ppm | < 5 ppm |
SPAN 80 Food Grade: Food-grade Sorbitan Monooleate complying with EU E493 and US FDA 21 CFR 172.842 is available on request. Includes food-grade raw materials, additional QC testing (peroxide value, iodine value, microbiological), full CoA, allergen statement, and Halal/Kosher documentation. Specify "food-grade SPAN 80" when inquiring.
SPAN 80 SDS, Safety & Regulatory Information
SPAN 80 is a combustible liquid but is not classified as a flammable liquid under standard GHS criteria (flash point typically >100 °C). Low acute hazard under normal handling conditions. SPAN 80 SDS / MSDS are available in English, German, French, Spanish, and Chinese - issued promptly on request and compliant with GHS Revision 9.
| Safety / Regulatory Parameter | Value / Notes |
|---|---|
| GHS Classification | Eye Irrit. 2; Skin Sens. 1 (some grades); Aquatic Chronic 3 |
| GHS Signal Word | WARNING |
| Flash Point | >110 °C (closed cup) - not classified as flammable liquid |
| PPE Recommended | Safety glasses / goggles; nitrile or rubber gloves; avoid prolonged skin contact; use in ventilated area |
| Storage | Cool, dry, well-ventilated area; 5–40 °C; keep containers sealed; shelf life 24 months from production date |
| REACH Status | Registered (CAS 1338-43-8) |
| Certifications | ISO 9001 · ISO 14001 · GHS · REACH · E493 / 21 CFR 172.842 (food grade on request) |
| SPAN 80 SDS Languages | English, German, French, Spanish, Chinese - available before or at order confirmation |
| Request SDS / CoA / TDS | sales@sinolookchem.com or WhatsApp +86 134 0071 5622 - issued within 12 hours |
SPAN 80 Price, Packaging & B2B Supply
SPAN 80 price is determined by grade (industrial / cosmetic / food), order volume, packaging type, and delivery terms. China's mature chemical supply chain and our integrated production give us internationally competitive pricing with full transparency and no hidden fees. Contact us with your requirements for a customized quote within 12 hours.
| Order Volume | Packaging | Included Services |
|---|---|---|
| 25 – 200 kg (Trial Order) | 25 kg plastic drums / 200 kg steel drums | CoA, SPAN 80 SDS/MSDS, TDS; free sample option for qualified buyers |
| 200 – 5,000 kg (Regular Supply) | 200 kg steel drums / 1,000 kg IBC tanks | Volume discount; dedicated account manager; priority scheduling |
| 5,000+ kg (Bulk / Long-Term) | IBC tanks / Flexitank bulk / custom | Lowest per-unit SPAN 80 price; fixed-price contract; 24/7 technical support |
📦 MOQ
25 kg for trial orders. Free samples: 500 g – 1 kg with full CoA for qualified buyers.
🚢 Delivery Terms
FOB, CIF, EXW available. Consolidation with Tween 80 and other Sinolook surfactants to optimize freight.
⏱ Response Time
SPAN 80 price quote within 12 hours. In-stock: 3–5 working days. Shelf life: 24 months.
💳 Payment Terms
T/T 30% advance, 70% vs B/L. L/C at sight for large orders. Fixed-price contracts for long-term supply.
- ✓ ISO 9001 · ISO 14001 certified - every batch QC tested for acid value, saponification value, HLB, hydroxyl value, moisture, viscosity, and heavy metals
- ✓ Full export documentation: CoA, SPAN 80 SDS/MSDS, TDS, Certificate of Origin, packing list, bill of lading
- ✓ EU REACH compliance documentation; INCI name confirmation (Sorbitan Oleate) for cosmetic raw material applications
- ✓ Food-grade SPAN 80 available with E493 / 21 CFR 172.842 documentation, Halal/Kosher certificates on request
- ✓ Free samples 500 g – 1 kg with full CoA; can supply alongside Tween 80 sample sets for HLB blending evaluation
- ✓ 24/7 technical support - SPAN 80 water-in-oil emulsion formulation, HLB blending calculations, drilling fluid and agrochemical application guidance
Frequently Asked Questions About SPAN 80
Technical and commercial questions about SPAN 80 (Sorbitan Monooleate) from our B2B customers worldwide.
What is SPAN 80 and what is it used for?
SPAN 80 (Sorbitan Monooleate, CAS 1338-43-8, INCI: Sorbitan Oleate) is a nonionic surfactant and emulsifier produced by reacting sorbitol with oleic acid. Its HLB value of 4.3 makes it the primary choice for water-in-oil (W/O) emulsification. Main SPAN 80 uses include: (1) emulsifier in invert-emulsion petroleum drilling fluids; (2) emulsifier in oil-based agrochemical emulsifiable concentrates (ECs); (3) emulsifier and corrosion inhibitor component in metalworking fluids and antirust coatings; (4) W/O emulsifier in cosmetic creams, ointments, and water-resistant sunscreens; (5) textile fiber lubricant and oiling agent; (6) anti-static additive in plastic and polymer processing. SPAN 80 is also used in combination with Tween 80 or Tween 20 for custom HLB blending.
What is the SPAN 80 HLB value and what does it mean?
The SPAN 80 HLB value is 4.3 ± 0.2. HLB (Hydrophilic-Lipophilic Balance) quantifies the relative affinity of a surfactant for water versus oil. An HLB of 4.3 means SPAN 80 is predominantly lipophilic (oil-loving) - it preferentially dissolves in and orients itself at oil-water interfaces with the sorbitan head group facing the water phase. This positions it as an effective W/O emulsifier (emulsifiers with HLB <8 are generally lipophilic and favor W/O emulsions). HLB values between 4 and 6 are ideal for W/O emulsification; HLB 7–9 for wetting; HLB 8–18 for O/W emulsification and solubilization. The required HLB for a specific oil phase determines how much SPAN 80 to blend with high-HLB Tween surfactants.
What is the difference between SPAN 80 and Tween 80 (Polysorbate 80)?
Both SPAN 80 and Tween 80 (Polysorbate 80) are sorbitan monooleate-based nonionic surfactants, but they differ fundamentally. SPAN 80 (HLB 4.3) is oil-soluble, lipophilic, and stabilizes W/O emulsions. Tween 80 / Polysorbate 80 (HLB 15.0) is water-soluble, hydrophilic, and stabilizes O/W emulsions. The difference arises from their structure: Tween 80 is produced by ethoxylating SPAN 80 - adding polyethylene oxide (PEO) chains to each of the sorbitan hydroxyl groups - which dramatically increases the HLB from 4.3 to 15.0. They are not interchangeable: use SPAN 80 for W/O emulsions (water droplets in oil) and Tween 80 for O/W emulsions (oil droplets in water). They are frequently blended together to achieve intermediate HLB values for specific formulation needs.
How do I calculate the SPAN 80 / Tween 80 blend ratio for a target HLB?
Use the linear blending equation: HLBblend = (wA × HLBA + wB × HLBB) / total weight. For SPAN 80 (HLB 4.3) + Tween 80 (HLB 15.0):
- Target HLB 6 → ~83% SPAN 80 + ~17% Tween 80
- Target HLB 8 → ~65% SPAN 80 + ~35% Tween 80
- Target HLB 10 → ~47% SPAN 80 + ~53% Tween 80
- Target HLB 12 → ~28% SPAN 80 + ~72% Tween 80
Note: the required HLB for a given oil phase must first be determined empirically or from reference data. The blending calculation is a starting point - always validate in your specific formulation. We can supply SPAN 80 and Tween 80 sample sets together for HLB blending trials.
What are the key SPAN 80 physical properties?
Key SPAN 80 physical and chemical properties: amber to brown viscous liquid at room temperature; SPAN 80 density ~0.986 g/cm³ at 25 °C; viscosity 800–1,500 mPa·s at 25 °C; SPAN 80 HLB value 4.3 ± 0.2; molecular formula C₂₄H₄₄O₆; molecular weight 428.60 g/mol; CAS number 1338-43-8; INCI name Sorbitan Oleate; flash point >110 °C; saponification value 145–160 mg KOH/g; hydroxyl value 190–220 mg KOH/g; solubility: oil-soluble, dispersible in water; soluble in ethanol and most organic solvents. SPAN 80 is a liquid at room temperature and does not require warming before use, unlike higher-HLB sorbitan esters.
Is SPAN 80 safe for cosmetic use? What is the SPAN 80 INCI name?
Yes. The SPAN 80 INCI name is Sorbitan Oleate. It is a permitted cosmetic ingredient under EU Cosmetics Regulation (EC) No. 1223/2009, widely used in creams, ointments, sunscreens, and makeup. Mild and low-sensitizing at standard cosmetic use levels. EU REACH registered (CAS 1338-43-8). We supply cosmetic-grade SPAN 80 with full INCI documentation, CoA, SDS, and EU compliance information.
Is food-grade SPAN 80 available? What is the SPAN 80 food additive designation?
Yes. SinoLook Chem can produce food-grade Sorbitan Monooleate. In the EU, SPAN 80 food grade is classified as food additive E493 (Sorbitan Monooleate), permitted as an emulsifier in various food categories. In the US, it is regulated under FDA 21 CFR 172.842. Food-grade production uses dedicated food-grade raw materials with additional QC testing including peroxide value, iodine value, and microbiological parameters. Full food-grade CoA, allergen statement, and Halal/Kosher documentation available on request. Please specify "food-grade SPAN 80" when inquiring.
What is the SPAN 80 CAS number and where can I get the SDS/MSDS?
The SPAN 80 CAS number is 1338-43-8 (Sorbitan Monooleate). SinoLook Chem provides GHS-compliant SPAN 80 SDS / MSDS in English, German, French, Spanish, and Chinese - issued promptly upon inquiry or order confirmation, available in advance for import compliance review and regulatory audits. We also provide full CoA (Certificate of Analysis), TDS (Technical Data Sheet), Certificate of Origin, and EU REACH compliance documentation with every shipment. Contact sales@sinolookchem.com or WhatsApp +86 134 0071 5622 to request documents.
How do I get a SPAN 80 price quote or free sample?
Free samples (500 g – 1 kg) with full CoA are available for qualified B2B buyers. We can supply SPAN 80 and Tween 80 sample sets together for HLB blending trials at no cost.
- Step 1: Contact us with your requirements: grade (industrial/cosmetic/food), quantity, packaging, delivery terms, and destination country.
- Step 2: Receive a customized SPAN 80 price quote within 12 hours, including lead time and documentation list.
- Step 3: Request a free sample with full CoA for evaluation - SPAN 80 + Tween 80 sets available for HLB blending trials.
- Step 4: Confirm your order - production scheduling, packaging, documentation, and freight booking handled end-to-end.
- Step 5: Receive your shipment on time with full traceability documentation and post-delivery technical support.
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