An export-oriented ECO-B grade for buyers who audit chain of custody as part of supplier qualification. The band supports ocean freight and a normal production queue, and the grade is normally requested by organisations whose procurement process asks for evidence of how an attributed volume was produced, transferred and recorded. Expect the documents to name the quantity and the period rather than the contents of a container.
Typical values, not for specification. Batch certificate governs delivery.
| Chemical name | Vinyl Acetate Monomer (VAM) |
|---|---|
| CAS / EINECS | 108-05-4 / 203-545-4 |
| Formula / MW | C4H6O2 / 86.09 |
| Appearance | Clear, colourless liquid, free of suspended matter |
| VA purity | ≥ 99.9 wt% (typical) |
| Water | ≤ 200 ppm (0.02 wt%, typical) |
| Acidity as acetic acid | ≤ 50 ppm (typical) |
| Acetaldehyde | ≤ 50 ppm (typical) |
| Methyl acetate | ≤ 50 ppm (typical) |
| Ethyl acetate | ≤ 250 ppm (typical) |
| Colour | ≤ 5 Pt-Co (typical) |
| Distillation range @760 mmHg | 72.3 – 73.1 °C |
| Density @20/20 °C | 0.9320 – 0.9345 g/cm³ |
| Boiling point | 72.7 °C |
|---|---|
| Melting point | − 93.2 °C |
| Flash point (closed cup) | − 8 °C |
| Autoignition temperature | 385 – 427 °C (source dependent) |
| Explosive limits in air | 2.6 – 13.4 vol% |
| Vapour pressure @20 °C | 11.7 kPa |
| Vapour density (air = 1) | 3.0 |
| Solubility in water @20 °C | ≈ 2 g/100 mL |
| Refractive index n20/D | 1.395 |
| Inhibitor (hydroquinone, HQ) | 8-10 ppm |
| Storage stability | Depends on temperature, oxygen availability and inhibitor consumption; periodic HQ and polymer re-test recommended |
| Bio-attribution | ISCC PLUS mass balance |
An audit asks one question repeatedly: can you show the path from input to claim. This section sets out what that path looks like and where buyers usually lose it.
State where the audited system starts and ends before collecting evidence. Most audit findings come from an unclear boundary rather than a missing document, because an unclear boundary makes every document arguable.
Follow the attributed quantity from receipt through consumption to the finished product claim. A chain that cannot be followed in both directions is a chain that will be questioned at the weakest link.
Confirm that lot numbers on the delivery documents, the batch analysis and the attribution record agree. Three references to one lot are evidence; three references to three spellings of one lot are a finding.
Write down how the site explains mass balance to a visitor before the visit happens. Consistency between the commercial team and the plant matters more than the eloquence of either.
Treat an audit finding as a record to close rather than a comment to note. A closed finding demonstrates a working system; an open one suggests the system exists on paper only.
Stainless steel or aluminium only. Confirm the headspace practice against documented supplier guidance instead of assuming a nitrogen blanket is protective.
Apply the same ocean-freight practice as the conventional grade at this band: shaded stowage, sealing, and analysis at loading and discharge.
Keep the attribution record with the shipping documents rather than in a separate commercial file. Evidence that lives in two places is evidence that goes missing once.
Stainless steel or aluminium, ventilated area, defined headspace arrangement, re-test interval written down and applied.
Ventilate, bond and earth, dedicated hoses, no ignition sources near the vapour zone. Certifiable paperwork does not reduce the flash hazard.
Each route below links to the application map for the full grade set.
Export adhesives with audited supply chains
Coating brands with supplier qualification audits
Board makers reporting to brand owners
Binder producers in fibre supply chains
Projects requiring documented sourcing
Every export lot ships with a batch certificate of analysis.
Compare the inhibitor band, storage window and delivery form side by side.
Technical, knowledge and commercial notes written for this product line.
Send your required volume, delivery form and site for Celanese VAM HQ 8-10 ECO-B; we reply with the matching grade, the batch documentation and the shipping window.
+8615380400285
sales2@liwei-chem.com
+8615380400285
Fred Wang
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