Ethylparaben
Ethyl 4-hydroxybenzoate, E214, Ethyl parahydroxybenzoate.
- CAS
- 120-47-8
- EC
- 204-399-4
- Sectors
- Pharma & Healthcare, Personal Care & Cosmetics, Food & Nutrition
Ethylparaben (CAS 120-47-8), the ethyl ester of 4-hydroxybenzoic acid, is a preservative supplied as a white crystalline powder that inhibits fungal and bacterial growth in topical medications, personal care lotions and sunscreens, and technical fluids. This Pharmaceutical Grade powder is highly effective at inhibiting the growth of fungi and bacteria.
It features a balanced solubility profile for both Technical Grade industrial fluids and cosmetic emulsions. It is widely recognized for its stability under varying temperature and pH conditions.
In the medical sector, it is utilized as a High-Purity additive in topical formulations. Its efficacy at low concentrations makes it a cost-effective solution for large-scale manufacturing.
Typical Properties
| Molecular formula | C9H10O3 |
|---|---|
| Molecular weight | 166.17 g/mol |
| Appearance | white crystalline powder |
| Form | Crystalline Powder |
| Color | White |
| Odor | at 100.00?%. mild phenolic |
| Melting point | 116 °C |
| Boiling point | 297-298 °C |
| Density | 1.291 g/cm³ @ Press: 750 Torr |
| Water solubility | Slightly soluble in water. |
| Flash point | 297-298°C |
| pH | 4.5-5.5 (H2O, 20°C) (saturated solution) |
| GHS signal word | Danger · Irritant / harmful, Health hazard |
| HS code | 29182930 |
| Grades available | Pharma Grade, Cosmetic Grade, Food Grade, Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Ethylparaben
Applications
- Topical Medications: Prevents microbial contamination in dermatological creams and antiseptic ointments.
- Personal Care: Serves as a primary preservative in moisturizing lotions and sunscreens.
- Industrial Fluids: Used in certain lubricants and coatings to prevent spoilage from bacterial activity.
Safety & Risks
Not classified as a hazardous substance, though Eye Irritation can occur. Standard PPE, including Safety Glasses and Gloves, is recommended for industrial handling.
Packaging
Commonly available in 25 kg Cardboard Drums or 1 kg bags for laboratory use.