Characterized by specific solubility and stability, this product is an efficient preservative. At 25°C, it has a water solubility of about 2.5 g/L, is highly soluble in ethanol and propylene glycol, and has poor solubility in oils. It is stable under acidic and neutral conditions, but may undergo hydrolysis when heated to high temperatures.
Key Advantages
It possesses broad-spectrum antibacterial activity, effectively suppressing the growth of molds, yeasts and certain bacteria.
The optimal pH range for its antibacterial effect is 4-7, which is consistent with the pH of most cosmetics, food and pharmaceuticals.
Moreover, it is used at a low concentration of 0.1% to 0.3% in related products, ensuring safety and good preservation effect.
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 Notes: Keep the product in a sealed, dry and dark environment, ensuring that the temperature does not go above 30°C.
- Packaging: Each barrel holds 25 kg, and the barrel can be a cardboard one or a polyethylene-lined one.
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: Could you tell me its melting point parameter?
A: The melting point ranges from 125 degrees Celsius to 128 degrees Celsius.
Q: What safety guidelines shall we follow when using this material?
A: Do not expose it to strong oxidizing substances. Always run a compatibility test in advance, especially in high pH value or high temperature working conditions.
Q: Please advise the packing details of this item.
A: Packing standard is 25kg per unit drum, available with cardboard drum and polyethylene inner liner.
Request a Quote/Sample
If you require Methyl 4-Hydroxybenzoate CAS 99-76-3 for your formula research and production, please connect with us. We will provide thorough documentation, free samples and a reasonable price quote.
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