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Malonic acid

CAS Number
141-82-2
EC Number
205-503-0
Chemical Formula
C3H4O4
Molecular Weight
104.06 g/mol

Description

Malonic acid (CAS 141-82-2 ) is a short-chain dicarboxylic acid used across pharmaceutical synthesis, specialty chemical manufacturing, and personal care formulation. It functions primarily as a reactive intermediate and pH buffering agent. This versatile compound enables precise control in synthesis and formulation processes. In pharmaceutical manufacturing, it serves as a key building block in the synthesis of barbiturates and vitamin B1 via the malonic ester synthesis route. Personal care formulators use it as a pH adjuster and mild preservative-boosting agent in skin care products. Controlled acidity supports formulation stability while maintaining the efficacy of active ingredients in various cosmetic applications. In food applications, it acts as an acidulant and flavoring component, contributing a clean tart note to certain processed food products. The compound also functions as a catalyst precursor and chelating agent in specialty chemical processes. Malonic acid is supplied as a white crystalline powder in a range of pack sizes from laboratory quantities to bulk industrial volumes. Standard commercial grades include technical grade and pharmaceutical-grade material. Our high-purity material meets USP and BP specifications for pharmaceutical use. Food-grade material compliant with FCC standards is also available for flavor and food acidulant applications to ensure safety and quality. Contact us for supply of Malonic acid Request Quote

Other Names (Synonyms)

propanediolic acid | propanedioic acid | methanedicarboxylic acid | methanedicarbonic acid | H2malo | carboxyacetic acid | malonate | Kyselina malonova

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point135 °C (decomp)
Boiling Point135 °C
Density1.6 g/cm³
Flash Point157°C
AppearanceCrystalline
ColorWhite
FormLiquid
Water Solubility1400 g/L (20 ºC)
Vapor Pressure0-0.2Pa at 25℃
Refractive Index1.4780
pH3.17(1 mM solution)
2.5(10 mM solution)
1.94(100 mM solution)
Log P-0.81

Safety & Handling

Danger
GHS05· CorrosiveGHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29171910
Storage Class13 - Non Combustible Solids
WGK (Germany)1