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Sodium Hydrosulfite

Sodium Hydrosulfite

其他信息

Appearance:

powder is a white sand crystal or light yellow powder.

CAS No.:

7775-14-6

Certification:

ISO,SGS, REACH

EINECS:

231-890-0

Molecular Formula:

Na2s2o4

Purity:

80%~90%

Product Description:

Product Name:Sodium Hydrosulfite

CAS No.: 7775-14-6

Formula: Na2s2o4

EINECS: 231-890-0

Certification: ISO

Purity: 80%~90%

Type: Sodium Hydrosulfite

Quality Specification:

Index Technical Grade Food Additive
Na2S2O4 ≥ 90% ≥ 88% ≥ 85% ≥ 88%
Iron (Fe) ≤20ppm ≤ 20ppm ≤ 20ppm ≤ 20ppm
Zinc (Zn) ≤ 1ppm ≤ 1ppm ≤ 1ppm ≤ 1ppm
solution appearance clear clear clear clear
EDTA / / / qualified
Arsenic(As) / / / ≤ 1ppm
Other heavy metal( As Pb) ≤ 1ppm ≤ 1ppm ≤ 1ppm ≤ 1ppm
Formate (As HCHO) / / / ≤ 0.05%
water insolubles ≤ 0.05% ≤ 0.05% ≤ 0.05% /
Cadmium (Cd) / / / ≤ 2ppm
Plumbum (Pb) / / / ≤ 5ppm

Features:

The powder is a white sand crystal or light yellow powder. The infusible powder is insoluble in ethanol, soluble in sodium hydroxide solution, reacts violently with water and burns.

The aqueous solution of the insurance powder is unstable in nature and has a strong reducing property, belonging to a strong reducing agent. It is easily exposed to oxygen in the air and oxidizes. At the same time, it easily absorbs moisture and degenerates, and it can seize oxygen in the air and give off a pungent sour taste.

 Application:

(1) Sodium Hydrosulfite/SHS is widely used in the textile industry for reducing dyeing, reducing cleaning, printing and decolorizing, and for the bleaching of fabrics such as silk, wool, and nylon. Since it does not contain heavy metals,the fabric after bleaching is very bright and not easy to fade.

(2) Sodium Hydrosulfite/SHS can also be used for bleaching foods, such as gelatin, sucrose, candied fruit, and bleaching of soaps, animal oils, bamboo utensils, and china clay.

(3) Sodium Hydrosulfite/SHS can also be applied to organic synthesis, such as dyes, pharmaceuticals as reducing agents or bleaches.

(4) Sodium Hydrosulfite/SHS is the most suitable bleach for wood pulp.

Packing

Standard packaging includes the following:

50kg iron drum.

Other package sizes are available upon request.

Storage

Store in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.

Period of validity

24 months.

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