This is a multi-purpose preservative with clear solubility and stability specifications. Its solubility in water is approximately 2.5 g/L at 25°C; it is easily soluble in ethanol and propylene glycol, but slightly soluble in fats and oils. It maintains stability in acidic and neutral environments, while high temperatures may cause hydrolysis.
Key Advantages
Its main advantages lie in its broad-spectrum antibacterial performance, which can effectively inhibit molds, yeasts and some bacteria.
It performs best in the pH range of 4 to 7, making it suitable for a variety of formulation systems.
In addition, the recommended concentration in cosmetics and pharmaceuticals is only 0.1%-0.3%, which is safe and efficient.
Specifications
| Chemical Name | 4-Hydroxybenzoic acid methyl ester |
| Molecular Formula | C₈H₈O₃ |
| CAS No. | 99-76-3 |
| Appearance | White or almost white crystalline powder |
| Content | 99.0%～100.5% |
| Melting Point | 125～128℃ |
| Acid Value | 4.0～7.0 |
| Ignition Residue | Ignition Residue ≤0.1% |
Packaging & Storage
- Packing: 25kg/paper drum or as per customer's demand
- Storage Conditions: It should be stored in a dry, sealed and light-shielded place, with the storage temperature controlled below 30°C. Packaging: 25 kg per barrel, with options of cardboard barrels or barrels lined with polyethylene.
Quality & Service
Manufactured in an ISO-certified facility, each batch comes with a Certificate of Analysis (COA). We offer reliable supply, technical support, and competitive pricing for bulk orders.
FAQ
Q: What are the major application sectors of the product?
A: Main application fields cover cosmetics, food additives and pharmaceutical raw materials.
Q: What dosage range is normally adopted in cosmetics and medicines?
A: The conventional use concentration is controlled at 0.1%–0.3%.
Q: How long can the product be stored effectively?
A: The valid storage period reaches 36 months.
Request a Quote/Sample
Sourcing 4-Hydroxybenzoic acid methyl ester with CAS 99-76-3 for cosmetic or industrial formulations? We offer detailed technical sheets, free lab samples and favorable offers upon your inquiry.
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