Ammonium tartrate

Appearance  The reagent is colorless crystal, dissolvable in the water, and dissolvable in ethanol slightly

Molecular formula  C₄H₁₂N₂O₆
Structural formula

Molecular weight  184.15 (according to international atomic weight in 1979)
CAS NO  3164-29-2
Technical demands 
1. C₄H₁₂N₂O₆≥98%
2. Specific rotary power:+32°to36°

Name	Special grade
Clarity test	qualified
Water insoluble matter	≤0.01 % max
Residue on ignition (on sulfate)	≤0.05 % max
Chloride	≤0.005 % max
Sulfate(SO4)	≤0.01 % max
Fe	≤0.003 % max
Heavy metal(Pb)	≤0.002 % max