Preservatives & Biocides
REACH
Butylparaben
CAS Number
94-26-8
EC Number
202-318-7
FEMA Number
FEMA 2203
What is Butylparaben?
Butylparaben (CAS 94-26-8), also known as butyl parahydroxybenzoate, is a broad-spectrum antimicrobial preservative effective against bacteria, yeasts, and molds; one of the most potent members of the paraben family.
Where is Butylparaben used?
- Cosmetics and personal care: preserves creams, lotions, and makeup formulations against microbial contamination
- Pharmaceuticals: preservative in topical preparations, oral suspensions, and multi-dose injectable formulations
- Food: protects baked goods, beverages, and flavoring systems from spoilage under FEMA 2203
- It is commonly blended with other parabens to achieve synergistic preservation.
Commercial specifications
- Used at low concentrations
- Packaging from kilogram quantities up to bulk drums
Other Names (Synonyms)
Butylparaben (TN)|Butyl parahydroxybenzoate|Butyl p-hydroxy benzoate|Butyl hydroxybenzoate|Butyl 4-hydroxybenzoate|Butoben|Nipabutyl|Butyl chemosept
What are the physical properties of Butylparaben?
Melting Point 68-69 °C
Boiling Point 309 °C
Density 1.28
Flash Point 181°C
Appearance white crystalline powder
Color White to almost white
Odor very faint phenolic
Form Crystalline Powder
Water Solubility <0.1 g/100 mL at 17 ºC
Vapor Pressure 0.002-0.113Pa at 20-50℃
Refractive Index 1.5115 (estimate)
Log P 3.57
How is Butylparaben classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant
Hazard Statements
H315 Causes skin irritation
H318 Causes serious eye damage
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H412 Harmful to aquatic life with long lasting effects
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
Which trade and regulatory codes apply to Butylparaben?
HS Code 29182900
Storage Class 11 - Combustible Solids
WGK (Germany) 2