| Customization: | Available |
|---|---|
| CAS No.: | 7757-83-7 |
| Formula: | Na2so3 |
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1.Appearance: White Powder
2.Purity: % 99min
3.PH :7-10 for Normal grade. PH:6-8 for viscose grade.
4.Properties: white fine crystal or powder,
easily soluble in water;absorb moisture; odorless, non-toxic.
| ITEM | SPECIFICATION | TEST RESULT |
| Na2SO3 content : | 97.0 %min | 97.56% |
| Sodium sulphate : | 2.5%max | 1.30% |
| Sodium chloride (NaCL): | 0.1%max | 0.08% |
| Iron (Fe) : | 30ppm max | 15ppm |
| Water insoluble : | 0.02%max | 0.02% |
| HEAVY METAL AS PB | 10ppm max | 5ppm |
| Free alkali (as Na2CO3) : | 0.10%max | 0.08% |
| Arsenic: | 2ppm max | 1.5ppm |
Stored in a cool, ventilated warehouse. Away from fire and heat. Acids, etc. should be kept separately, avoid
mixed reserve.
Usage:
widely used in bleaching, glass, paper making, tanning, metal smelting, surface treatment and filler industries.
It is aslo Used in chemical industry as material of manufaturing sodium sulphide,sodium silicate and other
chemical products.
1.Used as bleaching agent,preservative,loosening agent and antioxidant in food industry.It is also used in pharmaceutical synthesis and as a reducing agent in the production of dehydrated vegetables.
2.It used as dye reducing agent in the smelting of various cotton fabrics to improve the products' whiteness.the textile industry is used as a stabilizer for man-made fibers.
3.The paper industry is used as a lignin remover.
4.The electronics industry is used to manfacture photoresistors.
Used as a developer in photosensitive industry.
5.The water treatment industry is used for electroplating wastewater,drinking water trestment,etc.
6.Used as a reducing agent in the organic industry is in production to prevent the oxidation of semi-finished products during the reaction process.
7.Used to produce cellulose sulfite,sodium thiosulfate.
We Fondland Chemicals Co., Ltd (hereafter referred as FONDLAND) established in 2010, are the leading manufacturer and supplier of Chemicals.FONDLAND founded relying on Shandong Haihua Group with strongest supplying capability and competitive price. Our products were sold to most of the world, including Middle East, Africa, Southeast Asia, North America, South America , Europe etc.
Our mainly products:Sodium carbonate,Sodium bicarbonate,Ammonium bicarbonate,Aluminum sulfate,Calcium chloride,Magnesium chloride,Sodium metabisulfite,Sodium nitrite, and so on.
With the aim of supplying best quality, prompt delivery, competitive price and professional service,
we are looking forward to cooperating with you for a bright future!
A. More than 12 years of export experience, and professionals provide 24-hour online services;
B. Good quality, guaranteed price, fast supply and large quantity;
C. Flexible and diverse settlement methods and timely delivery of goods and documents;
D. The outer packaging is wear-resistant and moisture-proof, and multiple packaging methods are optional;
E. Cooperate closely with shipping forwarders to ensure the safety of after-sales goods;
1. Q: Are you manufacturer or trading company?
A: We are trading company but we have shares in several cooperated factories.
2. Q: What would you do to guarantee the product quality?
A: We have professional quality control team with strict quality control system and rigorous QHSE.
We give supervision on container loading and delivery to ensure the clearness and neatness of package.
3. Q: What about your price?
A: We always supply the products with appropriate price,because we believe this is an effective way to build
long - term business with our customers and earn good reputation.
4. Q: What payment terms do you accept?
A: For new customers, we accept 30% T/T in advance,70% balance against copy of shipping docs,L/C at sight;
For old customers, the payment terms can be negotiated accordingly.
5. Q: What about the order lead time?
A: Usually the order lead time is 10-15days after receiving your prepayment.
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