1,5-Pentanediol

Description

1,5-Pentanediol · CAS 111-29-5 · C5H12O2. UNII 07UXZ0SCST. Boiling Point: 240 °C; Boiling Point: 239 °C @760 [mm Hg]; Melting Point: -18 °C.

Identification

CAS Registry Number	111-29-5
PubChem CID	8105
Molecular formula	C5H12O2
IUPAC name	pentane-1,5-diol
UNII (FDA)	07UXZ0SCST

Computed Descriptors

Molecular Weight	104.15
XLogP3	-0.1
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	4
Exact Mass	104.083729621
Monoisotopic Mass	104.083729621
Topological Polar Surface Area	40.5
Heavy Atom Count	7
Formal Charge	0

Physical & Chemical Properties

Boiling Point	240 °C
Boiling Point	239 °C @760 [mm Hg]
Melting Point	-18 °C
Flash Point	129 °C (265 °F) (open cup)
Flash Point	136 °C (277 °F) - closed cup
Density	0.9941 g/cm cu at 20 °C; 0.9858 g/cm cu at 25 °C
Density	0.994 @ 20°C
Vapor Pressure	0.0039 [mmHg]
Vapor Pressure	3.90X10-3 mm Hg at 25 °C
LogP	-0.43

Physical description & handling notes

• CBI; Liquid
• Viscous liquid; [Merck Index] Colorless viscous liquid; Hygroscopic; [Alfa Aesar MSDS]
• Viscous, oily liquid
• Colorless
• Bitter taste
• Miscible with water

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Cosmetic ingredients (1,5-Pentanediol) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	84.9% (275 / 324)

GHS Hazard Classification

GHS notification summary	84.9% (275 / 324)
Reported hazard statements	H302 (15.1%)

Documented Uses

• CIR ingredient: 1,5-Pentanediol
• Used as plasticizer and brake fluid additive; Also used to make polyesters for emulsifying agents and resin intermediates; [Merck Index]
• As a plasticizer in cellulose products and adhesives, in brake fluid compositions. Forms esters and polyesters which can be used as plasticizers, emulsifying agents and resin intermediates.
• 1,5-Pentanediol has been reported to have antimicrobial and antifungal properties in pharmaceutical applications. Additionally, 1,5-Pentanediol has reported uses in products for hair loss, cold sores, nail problems, dry and scaly feet, and eczema; it can be used as a moisturizing substance and solvent.
• Information on 19 consumer products that contain 1,5-Pentanediol in the following categories is provided:
• 1,5-Pentanediol usually is produced by catalytic hydrogenation of glutaric acid or of its esters, e.g., dimethyl glutarate, although dicarboxylic acid mixtures containing glutaric acid also may be used, giving typically a mixture of 1,4-butanediol, 1,5-pentanediol, and 1,6-hexanediol.

Synonyms

1,5-PENTANEDIOL; Pentane-1,5-diol; 111-29-5; 1,5-Dihydroxypentane; Pentamethylene glycol; 1,5-Pentamethylene glycol; 1,5-Pentylene glycol; alpha,omega-Pentanediol; DTXSID2041256; 07UXZ0SCST; NSC-5927; DTXCID0021256; RefChem:73549; 203-854-4; 1,5 Pentanediol; NSC 5927

Frequently Asked Questions

What are the CAS number and molecular formula of 1,5-Pentanediol?

CAS 111-29-5; molecular formula C5H12O2; molecular weight — g/mol.

What other names is 1,5-Pentanediol known by?

1,5-PENTANEDIOL, Pentane-1,5-diol, 111-29-5, 1,5-Dihydroxypentane, Pentamethylene glycol, 1,5-Pentamethylene glycol.

What is the regulatory status of 1,5-Pentanediol?

Documented regulatory listings: CIR / INCI: Cosmetic ingredients (1,5-Pentanediol) -> CIR (Cosmetic Ingredient Review).

Is 1,5-Pentanediol classified as hazardous?

84.9% of GHS notifications report no hazard classification (275 of 324).

What are the key physical properties of 1,5-Pentanediol?

Boiling Point: 240 °C; Boiling Point: 239 °C @760 [mm Hg]; Melting Point: -18 °C; Flash Point: 129 °C (265 °F) (open cup).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.