SoleChem

Glyoxylic acid

CAS 298-12-4
EC 206-058-5
Formula C2H2O3
MW 74.04 g/mol
Chelating Agents Personal Care & CosmeticsPharmaceuticals & HealthcareWater TreatmentFood & Nutrition Preservation & BiocideChelation & SequestrationpH Regulation & BufferingCatalysis

Description

Glyoxylic acid (CAS 298-12-4, EC 206-058-5), also known as oxoacetic acid and glyoxalic acid, is a short-chain organic acid carrying both aldehyde and carboxylic acid functional groups. This dual reactivity makes it chemically distinct from simple monocarboxylic acids and drives its utility across multiple industrial sectors.

In water treatment, glyoxylic acid functions as a chelating agent, binding calcium and heavy metal ions to prevent scale formation and inhibit microbial growth simultaneously. In personal care formulations, it acts as a pH buffer and skin conditioner, where its aldehyde group participates in controlled crosslinking reactions with hair keratin proteins.

Glyoxylic acid is supplied as a clear aqueous solution, typically at 50% concentration, and is available in REACH-compliant grades for the European market. It carries no E-code designation. Pharmaceutical and food-contact grades conforming to FCC or Ph.Eur. standards can be sourced depending on application requirements. Standard packaging includes IBC containers and drums.

Physical Properties

Melting Point 98 °C
Boiling Point 111 °C
Density 1.42 g/cm³ @ Temp: 20 °C
Flash Point 111°C
Appearance clear yellow solution
Color Colorless to Light orange to Yellow
Form clear liquid
Water Solubility miscible
Vapor Pressure 14hPa at 19.85℃
Refractive Index n 20/D 1.414
pH 0.3 (19.5°C in H2O)
Log P -0.930 (est)

Safety & Handling (Learn More)

Danger GHS05 GHS07
H
H290H317H318H319
P
P234P261P272P280P317P321P390P406P501P264+P265P302+P352P333+P317P337+P317P362+P364P305+P351+P338P305+P354+P338

Trade & Regulatory

HS Code 29183000
UN Number 3265
ADR Class 8
Packing Group II
Storage Class 8A - Combustible corrosive hazardous materials
WGK (Germany) 1

Other Names

oxaldehydic acidOxoacetic Acidglyoxalic acidoxoethanoic acidoxo-acetic acid

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