Chinese name

三(羟甲基)氨基甲烷

English name

Tris (hydroxymethyl) aminomethane

Chinese alias

2-氨基-2-(羟甲基)-1,3-丙二醇

English alias

2-Amino-2-(hydroxymethyl)-1,3-propanediol

CAS No.

77-86-1

Molecular formula

C₄H₁₁NO₃

Molecular weight

121.14

Molecular structural formula

Storage temperature

Room temperature (18-25℃)

Dangerous properties

Non-hazardous chemicals

Chemical properties

Colorless crystals or white to off-white crystals or powders, with a light sweet and bitter taste, with a slight special odor.

Corrosive to copper and aluminum.

Soluble in ethanol and water, soluble in ethylene glycol, slightly soluble in methanol, acetone, ethanol and benzene, insoluble in ether, carbon tetrachloride, chloroform, ethyl acetate and cyclohexane.

pH 10.0-12 (50 g/L, H₂O, 25°C).

Melting point 167-172℃.

Boiling point 219-220℃/10mmHg.

Density ρ(23) 1.353g/mL.

Applications

Biological buffer, buffer range pH7.0-9.0; acid gas absorbent;

Acidometric titration reference material;

Amperometric determination of sulfhydryl groups in proteins;

Separation of serum proteins by electrophoresis on paper;

Starch plate electrophoresis to separate toxins;

Synthetic surfactants.

Hazard statements

If inhaled, ingested, or absorbed through the skin, it is harmful to the body. Pay attention to protection when using it.

Precautionary statements

Extinguishing: Alcohol-resistant foam, dry chemical or carbon dioxide.

Avoid contraindications.