Molekula
4-Aminophenol USP reference standard
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-Aminophenol USP reference standard is a high-purity analytical compound used primarily for pharmaceutical quality control, method validation, and reference testing in laboratories. Beyond its role as a standard, 4-aminophenol is used as an intermediate for pharmaceuticals and sulfur and azo dyes, as a photographic developer, and in hair and textile dyeing. It serves as a benchmark for verifying the identity and purity of 4-aminophenol in drug formulations, particularly those containing paracetamol (acetaminophen). This reference standard has a CAS number of 123-30-8, with the molecular formula H2NC6H4OH and a molecular weight of 109.13 g/mol. It is supplied as a solid and requires storage at ambient conditions. The product carries a signal word of "Warning" due to its potential health hazards. Molekula supplies 4-Aminophenol USP reference standard 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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 | Undamaged packaging |
| Conforms to USP | Conforms to USP monograph |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 189 °C |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless crystals |
| Melting Point | 187.5 °C |
| Boiling Point | 284 °C at 760 mmHg, decomposes; 167 °C at 8 mmHg; 150 °C at 3 mmHg; 130.2 °C at 0.3 mmHg |
| Water Solubility | 1.6 g/L at 20 °C |
| Solubility (other solvents) | Very soluble in ethanol; insoluble in benzene, chloroform; slightly soluble in trifluoroacetic acid; soluble in alkalies |
| Vapour Pressure | 4.0 × 10⁻⁵ mmHg at 25 °C |
| log P (octanol/water) | 0.04 |
Source: PubChem CID 403 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90032890 |
| CAS Number | 123-30-8 |
| IUPAC Name | 4-aminophenol |
| EC Number | 204-616-2 |
| Molecular Formula | H2NC6H4OH |
| Molecular Weight | 109.13 |
| Exact Mass | 109.0528 |
| SMILES | C1=CC(=CC=C1N)O |
| InChIKey | PLIKAWJENQZMHA-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H7NO/c7-5-1-3-6(8)4-2-5/h1-4,8H,7H2 |
| PubChem CID | 403 |
| UN Number | UN2512 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 29222900 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H332 Harmful if inhaled
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H340 May cause genetic defects
- H360FD May damage fertility. May damage the unborn child.
- H373 May cause damage to organs through prolonged or repeated exposure
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P263 Avoid contact during pregnancy/while nursing
- 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
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
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-Aminophenol USP reference standard primarily used for?
This reference standard is used for analytical testing, quality control, and calibration in pharmaceutical and chemical industries, particularly for verifying the identity and purity of 4-aminophenol in formulations like paracetamol (acetaminophen).
What is the chemical formula and molecular weight of 4-Aminophenol?
The chemical formula is **H₂NC₆H₄OH** and the molecular weight is **109.13 g/mol**.
How should 4-Aminophenol USP reference standard be stored?
Store at **ambient temperature** in a tightly sealed container, protected from light and moisture.
What grade of 4-Aminophenol is available from Molekula?
Molekula supplies this product as a **USP reference standard**, meeting high-purity requirements for analytical applications.
Can Molekula supply 4-Aminophenol USP reference standard in bulk quantities?
While this is a reference standard, Molekula can provide larger quantities upon request—contact us for bulk availability and pricing.
What documentation comes with the order of 4-Aminophenol USP reference standard?
Each order includes a **Certificate of Analysis (CoA)**, batch-specific documentation, and a Material Safety Data Sheet (MSDS) for handling and safety.
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.