酸性定影盐

p-aminobenzoic acid (PABA)

ethanoic acid

HYDROFLOURIC ACID 0.7

PA610；PA from Hexamethylene diamine and Sebacic acid(DIN,ISO)

acid base titration

salicylic acid methyl ester; methyl salicylate; wintergreen oil

P-aminobenzoic acid

ethylene diamine tetraacetic acid