40–60% lower than Western IOA; competitive Koch/oxo synthesis economics; multiple producers creating price competition

Multiple Chinese producers with significant IOA capacity; can supply from ISO tank to drum scale; consistent availability

Established exporters provide REACH OR, H361-compliant SDS in destination language, COA per batch, TSCA certification, and full DG documentation

Chinese producers supply both IOA and INA - buyers considering the H361-free alternative can source both from the same partner for comparison trials

• Business licence - scope includes IOA production or chemical trade; unified social credit code verifiable at gsxt.gov.cn
• DG production/business licence - mandatory for IOA; request copy; verify not expired
• Export customs registration code - confirms registered exporter
• COA from recent production batch - acid value (375–395 mg KOH/g), APHA, water content, RI
• GHS SDS in English (and your destination language) - must include H361 classification, GHS08 pictogram, DNEL values, UN 3265 transport info
• REACH OR letter - EU buyers: confirms ECHA registration number for 2-EHA

1. Request 500 mL–1 L sample with COA; confirm sample shipped as DG if by air (IATA Class 8 limited quantity rules apply)
2. Run incoming QC on sample: acid value titration + refractive index (primary), then Karl Fischer + APHA + GC (full characterisation)
3. Run formulation trial in your application: metal soap synthesis (check Co% in drier solution; check APHA of Ca/Zn stabiliser solution)
4. Confirm batch-to-batch AV consistency matters critically - variance >±5 mg KOH/g between batches causes metal content variation in your product
5. For PVC stabiliser synthesis: additionally test iron content (Fe ≤5 ppm requirement)
6. Document results; sign off qualification before commercial order

• Cannot produce DG hazardous chemical licence → do not buy
• SDS does not include H361 or UN 3265 → non-compliant product or non-compliant SDS; both are serious issues
• Price significantly below market ($<900/MT FOB) → possible adulteration (dilution with cheaper fatty acid) or unlicensed material
• Cannot confirm CAS 25637-84-7 or 149-57-5 → may be selling INA as IOA or vice versa
• Refuses to provide acid value on COA → most critical specification; any legitimate IOA supplier provides AV
• No DG export experience → will cause shipping delays and documentation errors

⚠️ Verify UN code on drum matches your Class 8 PG III requirement. Drums must show the UN packaging mark before loading.

HDPE inner vessel compatible with organic acids; confirm IBC UN code includes Class 8 corrosive service. Valve compatibility with IOA (organic acid) must be verified.

ISO tank is the most economical format for bulk IOA. ISO tank must be DG-rated (T11/T14) - standard food-grade ISO tanks are not approved for Class 8 corrosives.

Select a freight forwarder with demonstrated Class 8 DG experience for China export. Key requirements: IATA DG Agent certification (for air); DG-registered freight operations; experience booking IOA or similar carboxylic acids with major shipping lines. Ask specifically: "Do you regularly ship Class 8 corrosive liquids from China? Can you name shipping lines you use for Class 8?" A specialist DG forwarder will answer these confidently.

Submit a DG Advance Notice to your chosen carrier. For Class 8 liquids, many shipping lines require advance approval of DG cargo. Provide: UN number (3265), Class (8), PG (III), net weight, packaging type (drum/IBC/ISO tank), and origin/destination ports. Allow 1–2 weeks for carrier approval before the planned load date; if the carrier declines, you have time to identify an alternative.

The Dangerous Goods Declaration must be prepared by a certified DG person (Gefahrgutbeauftragter / DG Shipper). The DGD for IOA should state: UN 3265, CORROSIVE LIQUID, ACIDIC, ORGANIC, N.O.S. (2-Ethylhexanoic acid), 8, III. The DGD is legally signed by the shipper and accompanies the container from origin to destination. Any error in the DGD can result in the shipment being refused by the carrier or detained at port.

IOA drums/IBCs must be loaded with proper Class 8 labels visible on each package. The container must be placarded externally with Class 8 diamond labels. After loading, a Container Packing Certificate (CPC) must be signed, certifying that the container was packed in accordance with IMDG Code Chapter 5.4. The CPC, DGD, and B/L instruction are submitted to the carrier/terminal before vessel cut-off.

• ☐ Confirm CAS 25637-84-7 / 149-57-5 and grade (standard / PVC grade)
• ☐ Request supplier's Hazardous Chemical Production/Business Licence - verify validity
• ☐ Receive sample COA - verify acid value (375–395 mg KOH/g)
• ☐ Receive GHS SDS in your language - confirm H361, GHS08, UN 3265, DNEL in Section 8
• ☐ EU buyers: receive REACH OR letter with ECHA registration number for 2-EHA
• ☐ Request and test qualification sample (acid value + RI rapid QC; full characterisation + formulation trial)
• ☐ Agree Incoterms (recommend FOB or CIF first order), price, and packaging (drum/IBC/ISO tank)
• ☐ Identify and brief DG freight forwarder; confirm Class 8 capability
• ☐ Verify your storage facility is DG-compliant for Class 8 corrosive liquid

• ☐ Place PO: include product name, CAS, grade, quantity, UN 3265, packaging, Incoterms
• ☐ Confirm payment terms (T/T 30% deposit + 70% against B/L copy standard for first order)
• ☐ Submit DG Advance Notice to carrier; obtain carrier acceptance confirmation
• ☐ Request pre-shipment COA - verify AV on specific production batch before shipment
• ☐ Confirm DGD content with supplier: "UN 3265, Class 8, PG III, 2-Ethylhexanoic acid"
• ☐ US buyers: confirm TSCA positive certification on invoice
• ☐ EU buyers: confirm SVHC statement included in SDS or accompanying declaration
• ☐ Track booking confirmation; verify DG cargo is manifested correctly by shipping line

• ☐ Customs clearance with DG documents (DGD on file; UN packaging certification visible on packages)
• ☐ Inspect packaging: Class 8 labels visible and intact; no leakage; UN code mark on drums/IBCs
• ☐ Run incoming QC: acid value + RI (rapid, 45 min); then KF + APHA + GC (full, same day)
• ☐ For PVC stabiliser synthesis: additionally test Fe content (ICP)
• ☐ Compare results against COA; raise NCR immediately if out-of-spec
• ☐ Store in DG-compliant area (Class 8 storage); Class 8 hazard signs at storage location; spill kit adjacent
• ☐ File all documents: SDS, COA, DGD, REACH OR letter in compliance document archive
• ☐ Brief H361 risk assessment: ensure affected workers have completed reproductive hazard training before first use

Q1: Does isooctanoic acid require a Dangerous Goods Declaration for sea freight?

Yes - isooctanoic acid is classified as UN 3265, Class 8 (Corrosive liquid, acidic, organic, n.o.s.), Packing Group III under the IMDG Code. A full Dangerous Goods Declaration (DGD) is legally required for every sea freight shipment, without exception. The DGD must be completed by a certified DG person (or organisation) and submitted to the shipping line before cargo acceptance. Additionally, a Container Packing Certificate (CPC) must be signed after loading. In contrast, isononanoic acid (INA) may not require a DGD depending on its specific flash point and classification - if INA is not DG, this is a significant logistics simplification that buyers should factor into the IOA vs INA total cost comparison. Always confirm the DG status of any batch with the supplier's current SDS before booking freight.

Q2: How do I verify that a Chinese IOA supplier is properly licensed?

For a Chinese IOA supplier to legally produce, store, or trade IOA (a listed Hazardous Chemical in China), they must hold one of the following: (1) 危险化学品生产许可证 (Hazardous Chemical Production Licence) - if they manufacture IOA; issued by the provincial emergency management department; (2) 危险化学品经营许可证 (Hazardous Chemical Business Permit) - if they are a trader; also issued by local government. Request a copy (front and back) of the relevant licence and check: licence holder name matches the company you are dealing with; licence is currently valid (not expired); the dangerous chemicals covered include the relevant CAS/product category that includes IOA. You can also independently verify the company's registration status at China's National Enterprise Credit Information System (www.gsxt.gov.cn) using the company's Unified Social Credit Code. Legitimate Chinese IOA suppliers will provide these documents immediately and without hesitation.

Q3: What is the total lead time for IOA from China to Europe and how does the DG requirement affect it?

Total lead time for IOA from China to Northwest Europe (Rotterdam, Hamburg, Felixstowe) is typically 35–50 days from order confirmation to warehouse delivery: production/packing lead time (3–7 days) + carrier DG advance notice and acceptance (5–10 days) + China export customs clearance (2–3 days) + ocean transit (28–35 days) + destination port customs clearance (2–4 days, may take longer for DG inspection) + inland delivery (1–3 days). This is approximately 5–10 days longer than equivalent non-DG cargo due to the DG carrier pre-notification requirement and potentially slower customs processing for Class 8 goods at some European ports. For procurement planning, use a 45-day lead time as a conservative baseline and maintain 8–10 weeks buffer stock to absorb variation.

Q4: Can I combine IOA with other chemicals in the same container shipment?

Yes, but with DG segregation requirements. Because IOA is a Class 8 DG, co-loading with other chemicals in the same container is subject to IMDG Code segregation rules. Class 8 liquids (IOA) must be segregated from: Class 1 explosives, Class 2.1 flammable gases, Class 3 flammable liquids at low flash point, oxidising agents (Class 5.1), and foodstuffs (IMDG segregation table applies). Co-loading IOA with other Class 8 corrosives, non-DG general cargo, or compatible Class 8 goods is generally permissible. If combining with a DG-heavy shipment of multiple classes, consult your DG freight forwarder on the specific segregation matrix. In practice, for a container loaded only with IOA drums or IBCs, there is no segregation issue - the complexity arises when IOA is co-loaded with other chemicals of different hazard classes.

Q5: What storage facility requirements apply to IOA at the destination?

Isooctanoic acid, as a Class 8 corrosive liquid and H361 reproductive toxicant, has specific storage requirements at the destination facility: (1) DG-compliant bunded storage: storage area must have secondary containment (bund or drip trays) to capture the full contents of the largest container in case of failure; (2) Class 8 hazard signage on storage room/cage; (3) Segregation from incompatibles (oxidising agents, strong alkalis, foodstuffs, chlorinating agents) - consult IMDG/local hazmat storage regulations; (4) H361 specific controls under EU law (due to reproductive toxicity): P405 - "Store locked up"; access restricted to trained personnel; women of childbearing potential should not be assigned to IOA storage duties without specific risk assessment; (5) Corrosive-resistant materials: shelving and containment must be resistant to organic acids (carbon steel is acceptable for sealed drums; avoid aluminium and some rubbers); (6) Spill response equipment on-site: appropriate chemical absorbents, Class 8 spill kit, eye wash station within 10-second reach. Confirm specific local regulations (EU COSHH, US OSHA PSM, etc.) with your EHS team.

Q6: How do I get a quotation for isooctanoic acid from Sinolook Chemical?

To receive an accurate quotation from Sinolook Chemical for isooctanoic acid, provide the following information: (1) Product: Isooctanoic acid, CAS 25637-84-7 (or 149-57-5); (2) Grade: Standard technical / PVC stabiliser grade (low colour, low Fe); (3) Volume: MT per order or annual requirement; (4) Packaging: 200 L drums / IBC / ISO tank; (5) Destination port / country; (6) Incoterms preference: FOB or CIF; (7) Special requirements: REACH OR letter needed / TSCA certification / specific acid value range / APHA target / Fe specification. We will respond within 24 hours on business days with: firm price quotation; COA from recent production batch; GHS SDS in your language (includes H361, UN 3265); REACH OR letter (EU buyers); TSCA positive certification text (US buyers); DG documentation overview for your logistics team; and sample availability for qualification. We also supply isononanoic acid (INA, CAS 26896-18-4) if you are evaluating the H361-free alternative - ask for a comparative quotation on both products. Contact: WhatsApp 0086 18150362095 · WeChat/Tel 0086 13400715622 · Email sales@sinolookchem.com.