Butylethylpropanediol

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Abbreviation: BEPD, EBP, BEPG

Chemical Name: 2-Butyl-2-ethyl-1,3-propanediol

Synonyms: Ethylbutylpropanediol

Molecular Formula: C₉H₂₀O₂

Molecular Weight: 160.3

CAS Number: 115-84-4

EINECS Number: 204-111-7

Structural Formula:

Physicochemical Properties

White or slightly yellow solid at room temperature, melting point: 42–44℃. Slightly soluble in water, n-octanol/water partition coefficient 1gPow = 2.17.

Perstorp’s butyl ethyl propylene glycol comes in two specifications: one is a white crystalline solid or molten product containing over 99% butyl ethyl propylene glycol, with an acidity (based on acetic acid) ≤0.01%, color (liquid APHA) ≤30, and moisture ≤0.1%; the other is a liquid mixture containing (70±1)% butyl ethyl propylene glycol, (25±1)% neopentyl glycol, and (5±1)% water, and is a colorless and transparent liquid.

Properties and Uses

Butyl ethyl propylene glycol is a special sterically hindered diol containing two primary hydroxyl groups. It improves hydrolytic stability and resistance to detergent corrosion, as well as improving solubility and reducing crystallinity. It is used in the manufacture of saturated polyester resins, polyester polyols, polyurethane coatings, elastomers, etc., for powder coatings, coil coatings, and other baked enamels; unsaturated polyester resins, solvent-based and water-based short-oil alkyd resins, etc., for gelcoat coatings, etc.

Toxicity

Butylethylpropanediol has very low toxicity. The acute oral LD₅₀ in rats is 3536 or 5040 mg/kg, and the dermal LD₅₀ in rabbits is 3810 mg/kg. It is non-irritating to the skin and eyes.