Molekula
4-Acetamidophenol (Paracetamol)
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
4-Acetamidophenol, commonly known as paracetamol, is a widely used analgesic and antipyretic compound found in over-the-counter pain relievers and fever reducers. It is a key active pharmaceutical ingredient (API) in medications for mild to moderate pain and fever. This chemical has a CAS number of 103-90-2, with the molecular formula CH3CONHC6H4OH and a molecular weight of 151.16 g/mol. It should be stored at ambient conditions, and while it carries a "Warning" signal word, it is generally safe when used as directed. Molekula supplies 4-Acetamidophenol 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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100 g — £28.00 per pack ex VAT · £33.60 inc. VAT
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1 kg — £77.30 per pack ex VAT · £92.76 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 | A white or almost white crystalline powder, odorless, slight bitterness. Sparingly soluble in water, freely soluble in alcohol; very slightly soluble in methylene chloride. |
| Melting Point | 168 - 172℃ |
| Heavy metals | ≤10 ppm |
| Loss on Drying | ≤0.5% |
| Assay | 99.0% - 101.0% |
| Sulphated Ash | ≤0.1% |
| Related Substances | Impurity J:4-Chloroacetanilide 10ppm max; Impurity K: 4-Aminophenol 50ppm max; Impurity F: 4-nitrophenol 0.05% max; Any other impurity: 0.05% max; Total of other impurity: 0.1% max |
| Identification (IR) | Infra - red spectrum conforms to that of the reference standard. |
| Standard | EP8 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 185 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | Odorless |
| Melting Point | 168 °C |
| Density | 1.293 g/cm³ at 21 °C |
| Vapour Pressure | 6.29 × 10⁻⁵ mmHg at 25 °C |
| pKa | pKa = 9.38 |
| log P (octanol/water) | 0.46 |
Source: PubChem CID 1983 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90005078 |
| CAS Number | 103-90-2 |
| IUPAC Name | N-(4-hydroxyphenyl)acetamide |
| EC Number | 203-157-5 |
| Molecular Formula | CH3CONHC6H4OH |
| Molecular Weight | 151.16 |
| Exact Mass | 151.0633 |
| SMILES | CC(=O)NC1=CC=C(C=C1)O |
| InChIKey | RZVAJINKPMORJF-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H9NO2/c1-6(10)9-7-2-4-8(11)5-3-7/h2-5,11H,1H3,(H,9,10) |
| PubChem CID | 1983 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29242971 |
| Tariff Code | 2924297087 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H412 Harmful to aquatic life with long lasting effects
- USH01 May form combustible dust concentrations in air
Precautionary statements
- P273 Avoid release to the environment
- 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
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
- P501 Dispose of contents/container to an approved waste disposal plant
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
No alternate names recorded for this product.
Frequently asked questions
What is 4-Acetamidophenol (Paracetamol) commonly used for?
It is primarily used as an analgesic (pain reliever) and antipyretic (fever reducer) in pharmaceutical formulations, including over-the-counter medications.
What is the chemical formula and molecular weight of Paracetamol?
The chemical formula is CH₃CONHC₆H₄OH, and the molecular weight is 151.16 g/mol.
How should Paracetamol be stored?
Store in a tightly sealed container at ambient temperature, away from moisture and direct sunlight.
What grades of Paracetamol does Molekula supply?
Molekula supplies pharmaceutical-grade (USP/EP/BP compliant) and analytical-grade Paracetamol.
Can Molekula supply Paracetamol in bulk quantities?
Yes, we offer bulk quantities of Paracetamol in drums, bags, or custom packaging based on your requirements.
What documentation comes with an order of Paracetamol?
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.