Molekula
Methyl 4-hydroxybenzoate (Methyl paraben) USP
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
Methyl 4-hydroxybenzoate (Methyl paraben) USP is a widely used preservative in pharmaceuticals, cosmetics, and food products to inhibit microbial growth. This synthetic ester of para-hydroxybenzoic acid is a key ingredient in maintaining product shelf life by preventing spoilage from bacteria, yeast, and mold. Methyl paraben has a CAS number of 99-76-3, a molecular formula of HOC6H4CO2CH3, and a molecular weight of 152.15 g/mol. It is stable at ambient storage conditions and classified with a signal word of "Warning." Molekula supplies Methyl 4-hydroxybenzoate (Methyl paraben) USP 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 | White powder |
| Melting Point | 125°C - 128°C |
| Grade | USP Specification |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Solubility | Very slightly soluble in water, freely soluble in alcohol and methanol. |
| Assay | 99.0% - 100.5% |
| Sulphated Ash | ≤0.024% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White needles |
| Odour | Odorless or has faint characteristic odor |
| Melting Point | 125.2 °C |
| Boiling Point | 270.5 °C (decomposes) |
| Water Solubility | 2.5 g/L at 25 °C |
| Solubility (other solvents) | Slightyl soluble in water; very soluble in ethanol, ether, acetone; soluble in trfluoroacetic acid |
| Vapour Pressure | 0.000237 mmHg |
| log P (octanol/water) | 1.96 |
Source: PubChem CID 7456 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 90037525 |
| CAS Number | 99-76-3 |
| IUPAC Name | methyl 4-hydroxybenzoate |
| EC Number | 202-785-7 |
| Molecular Formula | HOC6H4CO2CH3 |
| Molecular Weight | 152.15 |
| Exact Mass | 152.0473 |
| SMILES | COC(=O)C1=CC=C(C=C1)O |
| InChIKey | LXCFILQKKLGQFO-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H8O3/c1-11-8(10)6-2-4-7(9)5-3-6/h2-5,9H,1H3 |
| PubChem CID | 7456 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29182904 |
| Tariff Code | 2918290060 |
Safety & GHS
-
Health Hazard
GHS07
-
Hazardous to the Environment
GHS09
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H411 Toxic 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
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 Methyl 4-hydroxybenzoate (Methyl paraben) USP commonly used for?
It is primarily used as a preservative in pharmaceuticals, cosmetics, and food products to prevent microbial growth.
What is the chemical formula and molecular weight of Methyl paraben?
The chemical formula is **HOC₆H₄CO₂CH₃**, and the molecular weight is **152.15 g/mol**.
What is the recommended storage condition for Methyl paraben USP?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and moisture.
What grade of Methyl paraben does Molekula supply, and is USP available?
Molekula supplies **USP-grade Methyl paraben**, meeting pharmaceutical and cosmetic industry standards.
Can Molekula supply Methyl paraben in bulk quantities?
Yes, we offer **bulk packaging options** (e.g., drums, bags) for large-scale industrial or commercial needs.
What documentation comes with an order of Methyl paraben USP?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **USP compliance documentation**.
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.