CAS 7772-98-7 Inorganic Chemical Raw Materials Industry Grade Sodium Thiosulfate

Product Description

Product Description

Sodium Thiosulfate , colorless crystal, odorless, it has a cool and bitter taste. The specific gravity is 1.729, heated to 100 °C, and 5 crystal waters are lost. It can soluble in water and insoluble in alcohol, and it has strong reducibility. It is easily weathered in dry air above 33 °C and deliquescent in humid air.

Specification

Photo Grade	Tech Grade	Tech Grade	Tech Grade
Apperance	Colorless Transparent(Pentahydrate)		White Powder(Anhydrous)
Na2S2O3	99% min	98.5% min	97% min
Water Insoluble Matter	0.01% max	0.03% max	0.03% max
Sulfide	0.001% max	0.003% max	0.001% max
Iron	0.001% max	0.003% max	0.005% max
PH Value	6.5-9.5	6.5-9.5	6.5-9.5
Water Solution Reaction	Pass Test	Pass Test	----------

Application

1. Sodium thiosulphate can adjust the PH balance of water quality in aquaculture; it can also absorb organic suspended solids in water bodies, thereby purifying water quality.

2. Sodium thiosulfate solution can dissolve the unsensitized silver bromide in the developed photographic film into a colorless complex and remove it, so it is a commonly used fixing agent.

3. Reducing agent for dichromate when tanning leather.

4. In the paper industry, it is used as a remover after pulp bleaching.

5. In the printing and dyeing industry, it is used as a dechlorination agent after bleaching cotton fabrics, a sulfur dye for knitted fabrics, and an anti-whitening agent for indigo dyes.

6. Analytical chemistry is used as reagents for chromatographic analysis and volumetric analysis.

Packing & Delivery

Certifications

Factory

FAQ

Q1.  Can I have a sample order for your products?
A: Yes, we welcome sample order to test and check quality.  Mixed samples are acceptable.
 
Q2.  What about the lead time?
A: Sample needs 3-5 days; mass production time needs 1-2 weeks.
 
Q3.  Do you have any MOQ limit for order?
A: Low MOQ, 10-100g for sample checking is available.
 
Q4.  How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT.  It usually takes 3-5 days to arrive.  Airline and sea shipping also optional.
 
Q5.  How to proceed an order for your products?
A: Firstly, let us know your requirements or application.
 
Secondly, we quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for normal order.
Fourthly We arrange the production.
 
Q6.  Is it OK to print my logo on package?
A: Yes.  Please inform us before our production and confirm the design firstly based on our sample.
 
Q7: Are you trading company or manufacturer?
A: We are chemical factory in China.  So, we can provide wholesale price.
 
Q8: What are your payment terms?
A8: We can accept various payment methods, Western Union, T/T, PayPal, etc.
 
Q9: Can your company accept the special requirements of customers?
A9: Of course, we can undertake services such as technical consultation and customized synthesis.
 
Q10: How about the delivery time?
A10: The delivery time is about 7-20 days after confirming the payment.  Delivery times vary from country to country.  (excluding Chinese holidays)
 
Q11: What type of containers do your company's products use?
A11: Our discreet packaging, good airtightness guarantees 100% of your package to pass through customs, generally aluminum foil bags, fluoride bottles, plastic steel drums, plastic drums or according to customer requirements, we will try our best to meet your requirements.
 
Q12: What is the shipping method?
A12: For small orders, we express by air, such as FedEx, TNT, UPS, DHL, EMS, for large orders, we can ship to the airport by air, and by sea to the seaport.  Our deliveries are 100% safe, fast, reliable and discreet.