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Appearance: | powder is a white sand crystal or light yellow powder. |
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CAS No.: | 7775-14-6 |
Certification: | ISO,SGS, REACH |
EINECS: | 231-890-0 |
Molecular Formula: | Na2s2o4 |
Purity: | 80%~90% |
ENVO CHEMICAL GROUP- scientific research center in cooperation with the government, modern production equipment, intelligent production management system, perfect production raw material supply chain, independent chemical logistics and transportation system, 30 years of industrial operation, are the key to our cost saving and quality assurance Factors that make our product prices more competitive in the market. Our goal is to provide customers with high-quality products, the most competitive prices, the shortest delivery time and perfect and professional after-sales service.
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ENVO CHEMICAL GROUP- With more than 30 years of experience in the chemical industry, it is one of the leading chemical raw material suppliers in China. With a professional scientific research and technical team, with rich experience and technology, we provide our customers with in-depth technical support and a variety of application solutions, ensure quality, save costs, and win unanimous approval from our customers.
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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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