Sodium thiosulfate, also known as sodium hyposulfite, big soda, hypo (from its alias sodium hyposulfide). It is a common thiosulfate, colorless and transparent monoclinic crystal. Sodium thiosulfate is easily soluble in water and reacts with strong acid to produce sulfur and . It is colorless, transparent crystal or crystalline fine particles; odorless, salty taste; sodium thiosulfate (big soda/hypo) is a colorless and transparent crystal, a hydrate of sodium thiosulfate, easily soluble Water, the aqueous solution is weakly alkaline. It is weathered in dry air above 33 ºC and loses crystal water. It is relatively stable in neutral and alkaline solutions, and will decompose in acidic solutions.
For photography, film, textile, chemical fiber, paper, leather, industry.
1. The photosensitive industry is used as a photographic fixer. The paper industry is used as a remover after pulp bleaching. In the printing and dyeing industry, it is used as a dechlorination agent for cotton fabrics after bleaching.
2. Analytical chemistry is used as a reagent for chromatographic analysis and volumetric analysis.
3. Used as detergent, chelating agent in food industry, antioxidant
| Grade |
Photograph |
Tech |
| Na2S2O3·5H2O |
99% Min. |
99% Min. |
| Insoluble matter in water |
0.01% Max. |
0.03% Max. |
| Na2S |
0.001% Max. |
0.003% Max. |
| Fe |
0.001% Max. |
0.003% Max. |
| pH value (200g/L solution) |
6.5-9.5 |
6.5-9.5 |
Q1: Is it possible to custom the labels with my own design?
A : Yes, and you just need to send us your drawings or artworks, then you can get you want.
Q2: How does your factory control the quality?
A: Quality is the life of our factory, first, each raw materials, come to our factory, we will test it firstly, if qualified, we will process the manufacturing with this raw materials, if not, we will return it to our supplier, and after each manufacturing step, we will test it, and then all the manufacturing process finished, we will do the final test before the commodities left our factory.
Q3: How about your service?
A: We provide 7*24 hours service, and whenever you need, we will always here with you, and besides, we can provide one stop purchasing for you, and when you purchase our commodities, we can arrange testing, custom clearance, and logistic for you !
Q4: Does free samples available for quality evaluation?
A: Yes, of course, we can provide free samples for you before you buy commercial quantity.
Q5: What is the delivery time?
A: For small quantity, it will take only 5-7 days for delivery, and for large quantity, it will take about 3-4 weeks.
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