PRODUCT NAME: Tris (hydroxymethyl) aminomethane

Molecular Formula):C4H11NO3

Molecular Wt:121.14

CAS: 77-86-1

Shelf life:two years

SPECIFICATION  PROPERTIES

STANDARD

Appearance

White crystalline powder

Assay,%

≥99.5

MP,℃

168.0-171.0

Solubility(40% aq.)

Clear, colorless solution

Heavy Metals, ppm

≤5

Water Content,%

≤0.2

PH value(5% aq.)

10.0-11.5

Iron ion,ppm

≤1

Sulfate,ppm

≤10

Chloride,ppm

≤3

Ultraviolet absorbance(40% aq.)

≤0.07 

Ultraviolet absorbance(40% aq.)

≤0.02

Infrared spectrum

Conforms to reference

Storage:room temperature