Tris(hydroxymethyl)aminomethane (TRIS) (Biological level)
Appearance:white crystal powder
Purity:≥99% 
Molecular formula:C₄H₁₁NO₃
Molecular wt:121.14
PKA:8.1
PH:7.0-9.1
Melting point:168-172 ^oC 
CAS:77-86-1
Prod No.:HYS024
Producing Area:Suqian China