This product is a versatile preservative with specific solubility and stability characteristics. Its solubility at 25°C is approximately 2.5 g/L in water, highly soluble in ethanol and propylene glycol, and slightly soluble in oils and fats. It maintains stable performance under acidic and neutral conditions, but may undergo hydrolysis when exposed to high temperatures.
Key Advantages
It boasts broad-spectrum antibacterial activity, effectively inhibiting the growth of molds, yeasts, and some bacteria.
The optimal pH range for its antibacterial effect is 4-7, which is compatible with most cosmetic, food and pharmaceutical formulations.
In addition, it is used at a low concentration of only 0.1%-0.3% in cosmetics and pharmaceuticals, ensuring safety while achieving good preservation results.
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 according to customer requirements
- Storage Requirements: The product must be stored in a dry, airtight and light-proof container, with the temperature maintained at less than 30°C. Packaging: 25 kg per barrel, available in cardboard barrels or polyethylene-lined barrels.
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: Can you introduce its toxicological profile?
A: This raw material is low toxic, with rat oral LD₅₀ exceeding 5000 mg/kg.
Q: Is there any potential sensitization possibility?
A: Individual cases of allergic reaction may appear among a few users.
Q: In which mainstream industries is this ingredient applied?
A: It is extensively utilized in cosmetic formulation, food industry and pharmaceutical manufacturing.
Request a Quote/Sample
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