CAS Registry Number

CAS 142-45-0 — Acetylenedicarboxylic acid

Acetylenedicarboxylic acid is an unsaturated dicarboxylic acid with a triple bond between its two central carbon atoms, primarily used as a specialty chemical in polymer synthesis, pharmaceutical intermediates, and as a cross-linking agent in resins. It is a white crystalline solid with a high reactivity profile, often employed in the preparation of high-performance polymers and fine chemicals. CAS 142-45-0, molecular formula C4H2O4, molecular weight 114.0563 g/mol. Stable at ambient temperatures with no signal word classification. Molekula supplies Acetylenedicarboxylic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.