1,4-Butanediol

AKA: Butane-1, 4-diol, 110-63-4, Tetramethylene glycol, 4-Butylene glycol, 4-Dihydroxybutane, 4-Tetramethylene glycol, Sucol B, Tetramethylene 1, DIOL 14B
Synthetic
Solvent
Clean
OriginDerived from petroleum-based hydrocarbons or synthesized from acetylene and formaldehyde as starting materials. Produced through catalytic hydrogenation and subsequent chemical synthesis to form the four-carbon diol compound.
Butane-1,4-diol is a butanediol that is butane in which one hydrogen of each of the methyl groups is substituted by a hydroxy group. A colourless, water-miscible, viscous liquid at room temperature (m.p. 16C) with a high boiling point (230C), it is mainly used for the production of other organic chemicals, particularly the solvent oxolane (also known as tetrahydrofuran or THF). It has a role as a protic solvent, a prodrug and a neurotoxin. It is a glycol and a butanediol.
Solubility greater than or equal to 100 mg/mL at 73 °F (NTP, 1992)
Formula
C4H10O2
Mol. Weight
90.12
CAS #
110-63-4
Form
Liquid
State
1,4-butanediol appears as odorless colorless liquid or solid (depending upon temperature). (USCG, 1999)
Skin Types
●all-skin-types, gentle
Best For
Dehydration
Pregnancy & Breastfeeding Safe
Caution
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Dissolves Ingredients
Locks In Moisture
Fights Bacteria
Antioxidant Protection
Dissolves other ingredients
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Caution
Restricted By
CIR Safety Findings
Not a Sensitizer
2 studies / 2 not sensitizing (CIR 731)
Mixed Skin Irritation Results
2 studies / 1 mixed / 1 not irritating / reactions minimal (CIR 731)
Eye Irritant in Testing
1 study / 1 irritating / reactions slight (CIR 731)
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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