Maleic Acid Supplier South Africa

Technical-grade maleic acid for polyester resins, fumaric acid production, food acidulants, and agrochemical synthesis.

Quick Specs

CAS No.	110-16-7
Formula	HOOCCH=CHCOOH (cis)
Purity	≥99%
Appearance	White crystalline solid
Melting Point	130–133 °C
Boiling Point	135 °C (dec.)
Molecular Weight	116.07 g/mol

Maleic Acid in Resins and Chemical Manufacturing

Maleic acid is the cis isomer of butenedioic acid. It is a key co-monomer in unsaturated polyester resins, contributing unsaturation for free-radical crosslinking alongside saturated diacids like phthalic anhydride or isophthalic acid. Industrial quantities of maleic acid are also isomerised to fumaric acid (its trans isomer), which has applications in food acidification and UPR. Both acids are precursors to malic acid via enzymatic or chemical hydration.

Packaging and Availability

Maleic acid is supplied in 25 kg woven polypropylene bags. Terracore maintains stock from multiple origins for supply reliability. COA reports purity (HPLC or acid-base titration), melting point, and heavy metals. SDS is provided.

Applications

Unsaturated polyester resin (UPR) production
Fumaric acid isomerisation feedstock
Food acidulant (E296) — regulated use
Malic acid synthesis
Agrochemical and herbicide synthesis
Lubricant additive

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