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EINECS 202-318-7
CAS No. 94-26-8 Density 1.108 g/cm3
PSA 46.53000 LogP 2.34910
Solubility water: <0.1 g/100 mL at 17 °C Melting Point 67-70 °C(lit.)
Formula C11H14O3 Boiling Point 309.2 °C at 760 mmHg
Molecular Weight 194.25 Flash Point 129.2 °C
Transport Information Appearance white crystalline powder
Safety 22-24/25 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 94-26-8 (Benzoic acid,4-hydroxy-, butyl ester) Hazard Symbols

Benzoicacid, p-hydroxy-, butyl ester (6CI,8CI);4-(Butoxycarbonyl)phenol;4-Hydroxybenzoic acid butyl ester;Aseptoform Butyl;Butoben;Butyl4-hydroxybenzoate;Butyl Butex;Butyl Tegosept;Butyl chemosept;Butylp-hydroxybenzoate;Butyl parabens;Butyl parasept;Mekkings B;NSC 13164;NSC 8475;Nipabutyl;Preserval B;SPF;Solbrol B;Tegosept Butyl;n-Butyl 4-hydroxybenzoate;n-Butylparaben;p-Hydroxybenzoic acid butyl ester;Butyl paraben;


Butylparaben Chemical Properties

Molecular Formula: C11H14O3
Molecular Weight: 194.227 g/mol
EINECS: 202-318-7
Storage temp.: 0-6 °C
Index of Refraction: 1.526
Density: 1.108 g/cm3
Flash Point: 129.2 °C
Melting point: 67-70 °C(lit.)
Appearance: White crystalline powder
Enthalpy of Vaporization: 57.19 kJ/mol
Boiling Point: 309.2 °C at 760 mmHg
Vapour Pressure: 0.000356 mmHg at 25 °C
Water Solubility: <0.1 g/100 mL at 17 °C
Structure of Butylparaben (CAS NO.94-26-8):
IUPAC Name: Butyl 4-hydroxybenzoate
Product Category of Butylparaben (CAS NO.94-26-8): Pharmaceutical Raw Materials

Butylparaben Uses

 Butylparaben (CAS NO.94-26-8) is used as an antifungal preservative in cosmetics, and is in the form of suspension fluid to be a component of many medications.

Butylparaben Production

 Butylparaben (CAS NO.94-26-8) can be derived by the reaction of p-hydroxybenzoic acid and butanol with sulfuric acid as catalyst.

Butylparaben Toxicity Data With Reference


skn-gpg 5%/48H MLD

    JSCCA5    Journal of the Society of Cosmetic Chemists. 28 (1977),357.

orl-mus LD50:13,200 mg/kg

    NEZAAQ    Nippon Eiseigaku Zasshi. Japanese Journal of Hygiene. 28 (1973),463.

ipr-mus LD50:230 mg/kg

    JSCCA5    Journal of the Society of Cosmetic Chemists. 28 (1977),357.

4.   RTECS  DH1980000

Butylparaben Consensus Reports

Reported in EPA TSCA Inventory.

Butylparaben Safety Profile

Poison by intraperitoneal route. A skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
Risk Statements:
36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements:
22:  Do not breathe dust 
24/25:  Avoid contact with skin and eyes 
WGK Germany: 2

Butylparaben Specification

 Butylparaben , its cas register number is 94-26-8. It also can be called p-Hydroxybenzoic acid butyl ester ; 4-(Butoxycarbonyl)phenol ; 4-Hydroxybenzoic acid butyl ester ; Butoben ; Butyl 4-hydroxybenzoate ; Butyl p-hydroxybenzoate ; Butyl parabens ; n-Butyl p-hydroxybenzoate ; n-Butylparaben ; 4-Hydroxybenzoic acid butyl ester ; and n-Butyl 4-hydroxybenzoate . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product: Wash mouth out with water, and get medical aid immediately. Notes to physician: Treat supportively and symptomatically.
In addition, Butylparaben (CAS NO.94-26-8) is not compatible with strong oxidizing agents, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, carbon dioxide.

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