This terminal alkyne carboxylic acid is a key fine chemical building block exclusive for lab & custom organic synthesis, prohibited for food, cosmetic raw material and oral pharmaceutical direct formulation. Its terminal alkyne group and carboxyl group enable dual functional derivatization: used as core starting material for click chemistry(CuAAC reaction), alkyne-tagged intermediate for biochemistry probe synthesis and fluorescent labeling precursor in bio-research labs. It undergoes esterification, amidation to produce corresponding ester/amide derivatives as pharmaceutical intermediates for steroid and specialty API synthesis; also applied to manufacture phase transfer catalyst and custom long-chain surfactant. In polymer industry, it serves as functional monomer for alkyne-modified polyester and acrylic resin to introduce crosslinkable alkyne side chain. Analytical grade product works as reference standard for alkyne fatty acid qualitative & quantitative testing in third-party chemical labs and environmental organic pollutant detection.
GHS irritant substance with hazard statements H315(Skin irritation), H319(Serious eye damage), H335(May cause respiratory irritation from dust inhalation). All weighing and melting operations shall be done inside ventilated fume hood; operators equip nitrile resistant gloves, splash safety goggles and chemical-proof lab coat to avoid crystal dust inhalation and molten liquid splash onto skin/eyes. Upon skin contact, flush contaminated skin with abundant running soapy water no less than 15min; for eye splashing, continuously irrigate eyes with large volume of pure water over 15min and consult ophthalmologist if irritation persists. Accidental oral intake in small dosage causes mild stomach upset; massive ingestion requires prompt hospital symptomatic treatment. Waste crystalline residue and contaminated packaging are classified as hazardous organic waste and disposed by certified professional institution per local environmental law, strictly forbidden to discharge into domestic sewer. Keep away from strong oxidizer, potassium permanganate and concentrated alkali to prevent exothermic redox reaction and decomposition.
