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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 79083Generated: October 23, 2026

Pentane-1,4-diol

pentane-1,4-diol · 1,4-pentyldiol · 1,4-PENTANEDIOL · Dihydroxypentan · 1,4-Pentanediol 99% · 1,4-Pentanediol,99% · 1,4-Dihydroxypentan · 1,4-Pentanediol - [P94584]

https://huagongshe.com/en/chemical/79083

Pentane-1,4-diol molecular structure

Identifiers & Physical Properties

CAS No.626-95-9
Molecular formulaC5H12O2
Average molar mass104.15 g/mol
Monoisotopic mass104.08372962 g/mol
SMILESCC(O)CCCO
InChIKeyGLOBUAZSRIOKLN-UHFFFAOYSA-N
PubChem CID79083
EC No.210-973-5
DTXSIDDTXSID20870727

Chemical & Physical Properties

XLogP0
Topological polar surface area40.5
Hydrogen bond donors2
Hydrogen bond acceptors2
Rotatable bonds3
Heavy atoms7
Formal charge0
Complexity37.1
Melting point50.86°C (estimate)
Boiling point72-73 °C/0.03 mmHg (lit.)
Density0.986 g/mL at 25 °C (lit.)
Refractive indexn20/D 1.447(lit.)
Flash point>230 °F
Storage conditionsInert atmosphere,Room Temperature
SolubilityChloroform, Methanol (Sparingly)
Physical stateOil
pKa (acidity coefficient)15.09±0.20(Predicted)
ColorColourless
Henry's law constant2.3×104 mol/(m3Pa) at 25℃, Compernolle and Müller (2014)
StabilityHygroscopic
InChIInChI=1S/C5H12O2/c1-5(7)3-2-4-6/h5-7H,2-4H2,1H3
InChIKeyGLOBUAZSRIOKLN-UHFFFAOYSA-N
SMILESC(O)CCC(O)C
CAS DataBase Reference626-95-9
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P302+P352-P304+P340-P305+P351+P338
Personal protective equipment (PPE)Eyeshields, Gloves
Water hazard class (WGK)3
Storage class10 - Combustible liquids

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 100% (4 of 4) of all reports.Not ClassifiedAggregated GHS information provided per 4 reports by companies from 1 notifications to the ECHA C&L Inventory.
Hazard Classes and CategoriesNot Classified
Personal protective equipment (PPE)Eyeshields, Gloves
Water hazard class (WGK)3
Signal wordWarning
GHS pictogramGHS07
Storage class10 - Combustible liquids
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P302+P352-P304+P340-P305+P351+P338

Applications & Uses

Uses

1,4-Pentanediol is a useful synthetic intermediate. It was used in the preparation of poly(ortho ester). 1,4-Pentanediol on dehydration in water at 573K yields five-membered ether, 2-methyltetrahydrofuran.

Uses

1,4-Pentanediol was used in the preparation of poly(ortho ester).

General Description

1,4-Pentanediol on dehydration in water at 573K yields five-membered ether, 2-methyltetrahydrofuran.