SMBS (Food Grade)

Product Name

Sodium Metabisulphite

Formula

Na₂S₂O₅

Molecular Weight

190.10

CAS No.

7681-57-4

HS CODE

2832.10

Parameter

Kayon Standard Value

Analytical Method

Appearance

White to Yellowish Crystalline Power

Visual

Odor

An odor of Sulfur Dioxide

Nasal

Purity(Na₂S₂O₅)

97.0 % min.

Titrimetric

SO₂

65.3 % min.

Titrimetric

Na₂SO₄

3.0 % max.

Turbidimetric

Iron(Fe)

30.0 ppm (mg/kg) max.

Colorimetric

Lead(Pb)

5.0 ppm (mg/kg) max.

Polarographic/AAS

Arsenic(As)

1.0 ppm (mg/kg) max.

Polarographic/AAS

Insolubility

0.05 % max.

Gravimetric

pH (5% solution)

4.0-4.8

pH Meter

Chloride(Cl)

Cadmium(Cd)

Selenium(Se)

Mercury(Hg)

(1) In 25kg Polyethylene bags, resistant to moisture, air and physical damage

(2) In 25kg, 50kg, 500kg, 1000kg – 1350kg Polypropylene bags with Polyethylene liners

(3) 25kg Polyethylene bags, 24mt/20’GP max. with pallets, 27mt/20’GP max. without pallets

(4) 25kg PP bags with PE liners, 25mt/20’GP max. with pallets, 27mt/20’GP max. without pallets

(5) 1000kg – 1350kg big bags, 20-27mt/20’GP, depends on package size and with pallets or without pallets

(1) As a preservative and antioxidant in food industries

(2) Mainly used in Gold, Cobalt, Copper, Zinc mining industries

(3) Color removing in paint and leather industries

(4) As a bleaching agent in textile industry

(5) Antiseptic in production of cellulose esters

(6) Main raw material in production of sodium hydrosulfite, aromatic alcohols and aldehydes

(7) Disinfectant in cosmetic industry

(8) Various applications in paper, fiber, rubber and adhesive industries

It should be stored in a dry and closed area avoiding air. Due to the decomposition, it loses its activity gradually.

According to Sodium Metabisulphite natural property, the phenomenon of Pseudo Caking is normal.