Molekula
Propyl 4-hydroxybenzoate - BP grade
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
Propyl 4-hydroxybenzoate (propyl paraben) is a synthetic preservative widely used in pharmaceuticals, cosmetics, and food products to inhibit bacterial and fungal growth. It is a white crystalline powder soluble in organic solvents and slightly soluble in water. This BP-grade chemical has a CAS number of 94-13-3, a molecular formula of HOC6H4CO2CH2CH2CH3, and a molecular weight of 180.20. It is stored at ambient conditions and carries a signal word of Warning for safety classification. Molekula supplies Propyl 4-hydroxybenzoate 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.
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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 | White to Off-white crystalline powder |
| Melting Point | 96 - 99°C |
| Heavy metals | ≤ 10ppm |
| Loss on Drying | ≤ 0.50% |
| Solubility | Freely soluble in ethanol. Slightly soluble in water |
| Assay | 99.0 - 102.0% |
| Sulphated Ash | ≤ 0.10% |
| Acid | ≤ 0.1ml |
| Residue on Ignition | ≤ 0.05% |
| Appearance of Solution | Clear colourless solution |
| Identification (IR) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 180 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals |
| Odour | Odorless or has faint odor |
| Melting Point | 96.1 °C |
| Boiling Point | 294 to 295 °C at 760 mmHg |
| Density | 1.287 g/cm³ at 20 °C |
| Water Solubility | 500 mg/L at 25 °C |
| Solubility (other solvents) | Soluble in ethanol, ethyl ether; slightly soluble in chloroform |
| Vapour Pressure | 0.000555 mmHg |
| Refractive Index | 1.5050 |
| log P (octanol/water) | 3.04 |
Source: PubChem CID 7175 (HSDB, Human Metabolome Database (HMDB), Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 90034023 |
| CAS Number | 94-13-3 |
| IUPAC Name | propyl 4-hydroxybenzoate |
| EC Number | 202-307-7 |
| Molecular Formula | HOC6H4CO2CH2CH2CH3 |
| Molecular Weight | 180.20 |
| Exact Mass | 180.0786 |
| SMILES | CCCOC(=O)C1=CC=C(C=C1)O |
| InChIKey | QELSKZZBTMNZEB-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H12O3/c1-2-7-13-10(12)8-3-5-9(11)6-4-8/h3-6,11H,2,7H2,1H3 |
| PubChem CID | 7175 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29182975 |
| Tariff Code | 2918290060 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- EUH381 Suspected of causing endocrine disruption in humans
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- 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
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, 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 Propyl 4-hydroxybenzoate (BP grade) used for?
Propyl 4-hydroxybenzoate (BP grade) is primarily used as a preservative in pharmaceuticals, cosmetics, and food products to inhibit microbial growth.
What is the chemical formula and molecular weight of Propyl 4-hydroxybenzoate?
The chemical formula is **HOC₆H₄CO₂CH₂CH₂CH₃**, and the molecular weight is **180.20 g/mol**.
How should Propyl 4-hydroxybenzoate (BP grade) be stored?
Store at **ambient temperature** in a tightly sealed container, away from direct sunlight and moisture.
What grade of Propyl 4-hydroxybenzoate does Molekula supply?
Molekula supplies **BP (British Pharmacopoeia) grade** Propyl 4-hydroxybenzoate, meeting pharmaceutical standards.
Can Molekula supply Propyl 4-hydroxybenzoate in bulk?
Yes, Molekula can supply Propyl 4-hydroxybenzoate in bulk quantities—please contact us for specific packaging options.
What documentation comes with an order of Propyl 4-hydroxybenzoate?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation confirming BP compliance.
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.