乙醇酸

Description

Glycolic Acid · CAS 79-14-1 · C2H4O3. UNII 0WT12SX38S. Boiling Point: 100 °C; Melting Point: 79.5; Melting Point: MP: 79.5 °C.

Identification

CAS Registry Number	79-14-1
PubChem CID	757
Molecular formula	C2H4O3
IUPAC name	2-hydroxyacetic acid
UNII (FDA)	0WT12SX38S

Computed Descriptors

Molecular Weight	76.05
XLogP3	-1.1
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	1
Exact Mass	76.016043985
Monoisotopic Mass	76.016043985
Topological Polar Surface Area	57.5
Heavy Atom Count	5
Formal Charge	0

Physical & Chemical Properties

Boiling Point	100 °C
Melting Point	79.5
Melting Point	MP: 79.5 °C
Melting Point	75 - 80 °C
Melting Point	80 °C
Density	1.49 at 25 °C/4 °C
Density	1.49 @25 °C
Vapor Pressure	0.02 [mmHg]
Vapor Pressure	8.1 [mm Hg] @80 °C
LogP	-1.11

Physical description & handling notes

• Dry Powder; CBI; Liquid; Other Solid; Large Crystals; Liquid; Liquid
• Colorless, odorless crystals; [HSDB] Hygroscopic; Commonly available commercially as 70% solution; [ICSC]
• Solid
• COLOURLESS HYGROSCOPIC CRYSTALS.
• Colorless, translucent solid
• Solid glycolic acid forms colorless, monoclinic, prismatic crystals.

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CIR / INCI: Cosmetic ingredients (Glycolic Acid) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	0.3% (10 / 3312)

GHS Hazard Classification

GHS notification summary	0.3% (10 / 3312)
Reported hazard statements	H302 (82.6%), H314 (99.7%), H318 (28.5%), H332 (30.6%), H361, H370, H373, H402

Documented Uses

• Used as a cheap organic acid to manufacture adhesives; to dye, print, and crease-proof textiles; to clean metals, water wells, and dairy equipment; and to delime hides and process furs; Also used in leather dyeing, adhesives, electroplating, pH control, copper pickling, printed wire board flux, oil well acidification, biodegradable polymers, soldering compounds, iron chelating, chemical milling, etching lithographic plates, and dermatology; [HSDB] Active product registrations for uses in cleaning products; [NPRIS]
• Acid and Alkali Cleaning of Metals [Category: Clean]
• Electroplating [Category: Plate]
• Petroleum Production and Refining [Category: Industry]
• Soldering [Category: Heat or Machine]
• Working with Glues and Adhesives [Category: Other]

Synonyms

glycolic acid; 2-Hydroxyacetic acid; 79-14-1; hydroxyacetic acid; Hydroxyethanoic acid; Glycollic acid; glycolate; alpha-Hydroxyacetic acid; 2-Hydroxyethanoic acid; Kyselina glykolova; Kyselina hydroxyoctova; GLYCOLLATE; DTXSID0025363; NSC-166; 0WT12SX38S; DTXCID105363

Frequently Asked Questions

What are the CAS number and molecular formula of Glycolic Acid?

CAS 79-14-1; molecular formula C2H4O3; molecular weight — g/mol.

What other names is Glycolic Acid known by?

glycolic acid, 2-Hydroxyacetic acid, 79-14-1, hydroxyacetic acid, Hydroxyethanoic acid, Glycollic acid.

What is the regulatory status of Glycolic Acid?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; CIR / INCI: Cosmetic ingredients (Glycolic Acid) -> CIR (Cosmetic Ingredient Review).

Is Glycolic Acid classified as hazardous?

0.3% of GHS notifications report no hazard classification (10 of 3312).

What are the key physical properties of Glycolic Acid?

Boiling Point: 100 °C; Melting Point: 79.5; Melting Point: MP: 79.5 °C; Melting Point: 75 - 80 °C.

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.