Molekula
Acetylsalicylic acid
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
Acetylsalicylic acid is a well-known nonsteroidal anti-inflammatory drug used for pain relief, fever reduction, and as an antiplatelet agent. It is commonly known as aspirin. Available with a CAS number of 50-78-2, molecular formula C9H8O4, and molecular weight 180.16 g/mol. Stored at ambient temperatures. Signal word: Warning. Molekula supplies Acetylsalicylic acid 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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500 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
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 | White crystal or crystalline powder |
| Assay | 99% Min |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Monoclinic tablets or needle-like crystals |
| Melting Point | 135 °C |
| Boiling Point | 140 °C |
| Vapour Pressure | 2.52 × 10⁻⁵ mmHg at 25 °C (calc) |
| pKa | pKa = 3.5 |
| log P (octanol/water) | 1.19 |
Source: PubChem CID 2244 (HSDB, ICSC, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90027230 |
| CAS Number | 50-78-2 |
| IUPAC Name | 2-acetyloxybenzoic acid |
| EC Number | 200-064-1 |
| Molecular Formula | 2-(CH3CO2)C6H4CO2H |
| Molecular Weight | 180.16 |
| Exact Mass | 180.0423 |
| SMILES | CC(=O)OC1=CC=CC=C1C(=O)O |
| InChIKey | BSYNRYMUTXBXSQ-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H8O4/c1-6(10)13-8-5-3-2-4-7(8)9(11)12/h2-5H,1H3,(H,11,12) |
| PubChem CID | 2244 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29182210 |
| Tariff Code | 2918220010 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H361d Suspected of damaging fertility. Suspected of damaging the unborn child.
Precautionary statements
- P263 Avoid contact during pregnancy/while nursing
- 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
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- 2-(Acetyloxy)benzoic acid
- 2-Acetoxybenzoic acid
- Acenterine
- Acetophen
- Acylpyrin
- aspirin
- Ecotrin
- o-Acetoxybenzoic acid
- O-Acetylsalicylic acid
- Salicylic acid acetate
Frequently asked questions
What is acetylsalicylic acid used for?
Acetylsalicylic acid is primarily used as a nonsteroidal anti-inflammatory drug (NSAID) for pain relief, fever reduction, and to prevent blood clotting.
What is the chemical formula and molecular weight of acetylsalicylic acid?
The formula is C9H8O4, and the molecular weight is 180.16 g/mol.
How should acetylsalicylic acid be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for acetylsalicylic acid?
Molekula supplies acetylsalicylic acid in analytical grade.
Can Molekula supply acetylsalicylic acid in bulk?
Yes, Molekula can supply acetylsalicylic acid in bulk quantities upon request.
What documentation comes with an order of acetylsalicylic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS).
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.