| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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(1) Quickly and timely response;
(2) Quick and professional Delivery of chemicals;
(3) Professional technical support and after-sales service;
(4) Full set of Hazard Chemical Exporting Licenses;
(5) Continuous and stable supply chemicals with professionally deal Bulk Vessel,IBC Tank and containers transportation;
(6) High quality chemicals with best competitive price;
(1) Pharmaceutical industry: for the production of chloroform, phenylsulfone and benzaldehyde. Rubber industry is used as a coagulant.
(2) Printing and dyeing industry: used as cotton dechlorinating agent after bleaching, cotton cooking agent.
(3) Leather industry: used for leather treatment, can make the leather soft, plump, tough, with waterproof, folding resistance, wear resistance and other properties.
(4) Chemical industry: used for the production of hydroxyvanillin, hydroxylamine hydrochloride, etc.
(5) Photosensitive industry: used as a developer, etc.
(6) Food industry: used as a preservative, antioxidant, flour amendments.
(7) Sodium metabisulfite is used in the reduction of gold from chloric acid (gold dissolved in royal water)
| ITEM | SPECIFICATION | TEST RESULT |
| PURITY(AS Na2S2O5 ): | 97%MIN | 97.35% |
| SULFUR DIOXIDE(SO2): | 65.0%MIN | 65.6% |
| IRON(Fe): | 0.003%MAX | 0.0012% |
| ARSENIC(As) | 0.0001%MAX | <0.0001% |
| HEAVY METALS(As Pb) | 0.0005%MAX | <0.0005% |
| SELENIUM | 0.0005%MAX | <0.0005% |
| WATER INSOLUBLE: | 0.03%MAX | 0.01% |
PH VALUE |
4.0-4.8 |
4.5 |
25kg pp/paper bag with PE liner; 1000kg jumbo bag; can be customized as per request:
1.The packaging forms of our products are plastic woven bags, film bags, moisture-proof bags, kraft paper bags, plastic buckets;
2.You can choose 25kg, 1000kg and other different specifications
3.You can also customize the shipping mark and pallet according to actual needs, to ensure that the packaging is intact during the transportation of the goods,;
4.In order to prevent the goods from deterioration due to moisture, please also store the goods in a dry and cool place;
Q1. How about your company?
A: Established in 2010 and honored every day since. Qingdao Fangjinlong's mission is providing unparalleled quality and service in every aspect of our operations, As a chemical expert and supplier, the company has invested 2 chemical plants and it relies on the research and development of technology of the Environmental Science and Engineering of Ocean university of China . Fangjinlong undertakes and provides support for market-driven research,strives for commercialization of the technologies to benefit the industry and the society at large, as well as to promote the economic growth and sustainability of the earth. Begin your partnership with Fangjinlong , please contact us.
Q2. How can we guarantee quality?
A: Always a pre-production sample before mass production;
Always final Inspection before shipment;
Q3:Can you give me a discount price?
A: Surely,It depend on your quantity.
Q4:How can i get a sample?
A: Free samples is available,but freight charges will be at your account and the charges will be return to you or deduct from your order in the future.
Q5: How to confirm the Product Quality before placing orders?
A: You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
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