CAUSTIC  SODA
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SODIUM  CORROSIVE  INDUSTRIAL ( GRADE A )

FORMULA

NaOH

Apperarance

Colourless  or  coloured  liquid.

Crystal  residue  is  accepted

Fraction  of  total  mass of Sodium      Hydroxide , % , not less than  ( min.)

NaOH

46,0

Fraction of  total  mass of  Soda,

% , not more than  ( max.)

Na₂CO₄

0,4

Fraction of  total  mass of  Sodium Chloride , % , not more than  ( max.)

NaCl

3,0

Fraction of  total  mass of  Iron ,

% , not more than  ( max.)

Fe₂O₃

0,007

SODIUM  CORROSIVE  INDUSTRIAL ( GRADE B )

FORMULA

NaOH

Apperarance

Colourless  or  coloured  liquid.

Crystal  residue  is  accepted

Fraction  of  total  mass of Sodium      Hydroxide , % , not less than  ( min.)

NaOH

48,0

Fraction of  total  mass of  Soda,

% , not more than  ( max.)

Na₂CO₄

0,25

Fraction of  total  mass of  Sodium Chloride , % , not more than  ( max.)

NaCl

0,035

Fraction of  total  mass of  Iron ,

% , not more than  ( max.)

Fe₂O₃

0,001