A bio-attributed grade on the lowest inhibitor band, for regional buyers who combine short-cycle supply with sustainability reporting. The vinyl acetate specification is unchanged; what differs is the bookkeeping behind the lot, which is attributed under a mass balance chain of custody rather than being physically separated from conventional output. Handling and storage rules are identical to the conventional grade at this band.
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) | 3-5 ppm |
| Storage stability | Depends on temperature, oxygen availability and inhibitor consumption; periodic HQ and polymer re-test recommended |
| Bio-attribution | ISCC PLUS mass balance |
Mass balance is an accounting method, not a separation process. This section sets out how a bio-attributed lot is produced, attributed and documented, and what the buyer should not assume from it.
Bio-based and conventional feedstock can enter the same production system, and the output is not physically segregated. Attribution is kept in the books, which is why the term is bio-attributed rather than bio-based content in the drum.
The certified share of bio-based input is assigned to a defined quantity of output. That quantity is what a buyer can claim, and it is limited by what entered the system, so the same certificate cannot be sold twice.
The claim travels with documents that link the lot to the attributed volume. A buyer should expect the paperwork to identify the quantity and the period rather than to describe the physical contents of the container.
Specification, handling, storage and transport requirements are the same as for the conventional grade at the same band. A bio-attributed lot does not need different tanks, and it does not behave differently in a polymerisation.
Stainless steel or aluminium only. Confirm the headspace practice against documented supplier guidance instead of assuming a nitrogen blanket is protective.
Describe the material as bio-attributed under mass balance and avoid implying physical separation. Precision here protects the buyer as much as the supplier, because an overstated claim is the buyer claim too.
Apply the same storage practice as the conventional grade at the same band: shaded tank, ventilated area, defined headspace arrangement and a defined re-test rule.
File the attribution documents with the batch analysis and the lot number in one place. A claim that cannot be linked to a lot is difficult to defend in an audit.
Bond and earth, dedicate hoses, keep ignition sources away. The sustainability attribute does not alter the flammability of the material by any amount.
Each route below links to the application map for the full grade set.
Brands reporting scope 3 emissions
Coating ranges with sustainability claims
Packaging chains facing customer questionnaires
Binder lines supporting fibre claims
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 3-5 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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