2-Mercaptobenzimidazole (MBI) is widely utilized as a corrosion inhibitor, copper-plating brightener and rubber accelerator. The residue of MBI in the environment is potentially harmful.
Chemical formula    C14H10N4S2Zn
Molar mass              117.148 g·mol−1
Density            1.316 g/cm3
Melting point         3000 C Min
Boiling point           270.6°C at 760 mmHg
IUPAC name 2-Amino-3-methylbutanoic acid / 2-Aminoisovaleric acid / Valic acid
Technical Analysis
Specification        Typical Values
Colour (APHA)        white to off-white
pH 5.5 – 6.5 (100 g/l, H₂O, 20°C)
CAS NO.              221-203-2
Solubility              soluble, 85 g/L
Zinc 2-mercaptobenzimidazole is a zinc salt that is harmful if ingested or inhaled. It can cause abdominal pain, nausea, vomiting, and diarrhea if ingested. If inhaled, it can cause shortness of breath, tightness of the chest, sore throat, or cough.