Molekula
Acetic anhydride SG
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Acetic anhydride (CAS 108-24-7) is a colorless, corrosive liquid used primarily in the production of cellulose acetate, pharmaceuticals, and synthetic fibers. It serves as an acetylating agent in organic synthesis and is essential for manufacturing aspirin and other esters. This chemical has a molecular formula of C4H6O3 and a molecular weight of 102.09 g/mol. It is stored at ambient temperatures but requires careful handling due to its hazardous nature, indicated by its "Danger" signal word. Molekula supplies acetic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 L — £45.00 per pack ex VAT · £54.00 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless liquid |
| Refractive Index | 1.3885 - 1.3915 (20°C) |
| Assay (GC) | ≥99.0% |
| Identification (IR) | Conforms to structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 49 °C |
| Transport Class | 8 (3) |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless liquid |
| Odour | Strong acetic odor |
| Melting Point | -73.4 °C |
| Boiling Point | 139.5 °C |
| Density | 1.08 (relative, water = 1) |
| Water Solubility | 120 g/L at 20 °C |
| Solubility (other solvents) | Slowly soluble in water, forming acetic acid |
| Vapour Pressure | 0.680 kPa (5.1 mmHg) at 25 °C |
| Refractive Index | 1.3901 |
Source: PubChem CID 7918 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 21238314 |
| CAS Number | 108-24-7 |
| IUPAC Name | acetyl acetate |
| EC Number | 203-564-8 |
| Molecular Formula | C4H6O3 |
| Molecular Weight | 102.09 |
| Exact Mass | 102.0317 |
| SMILES | CC(=O)OC(=O)C |
| InChIKey | WFDIJRYMOXRFFG-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3 |
| PubChem CID | 7918 |
| UN Number | UN1715 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29152400 |
| Tariff Code | 2915240010 |
Safety & GHS
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Flammable
GHS02
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Corrosive
GHS05
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Toxic
GHS06
Hazard statements
- EUH029 Contact with water liberates toxic gas
- EUH071 Corrosive to the respiratory tract
- H226 Flammable liquid and vapour
- H302 Harmful if swallowed
- H314 Causes severe skin burns and eye damage
- H330 Fatal if inhaled
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Acetanhydride
- Acetic acid, anhydride
- ACETIC ANHYDRIDE
- Acetic oxide
- Acetyl acetate
- Acetyl anhydride
- Acetyl ether
- Acetyl oxide
- Anhydride acetique
- Ethanoic anhydride
Frequently asked questions
What is acetic anhydride used for?
Acetic anhydride is primarily used in the production of cellulose acetate for textiles and plastics, as well as in the synthesis of aspirin, food additives, and pharmaceuticals.
What is the chemical formula and molecular weight of acetic anhydride?
The chemical formula is **C₄H₆O₃**, and the molecular weight is **102.09 g/mol**.
How should acetic anhydride be stored?
Store acetic anhydride in a tightly sealed container at **ambient temperature**, away from moisture, heat, and incompatible materials.
What grades of acetic anhydride does Molekula supply?
Molekula supplies **technical grade** and **reagent grade** acetic anhydride, depending on purity requirements.
Can Molekula supply acetic anhydride in bulk quantities?
Yes, Molekula can supply acetic anhydride in **bulk quantities** (e.g., drums, IBCs) for industrial applications—contact us for specific packaging options.
What documentation comes with an order of acetic anhydride?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.