PHYSICAL APPEARANCE :
White crystalline Solid, Odorless.
Application: To remove chlorine from solution according to the eq. |
Na2S2O3+8Cl+ 5H2O —> 2NaHSO4 + 8HCL & Na2S2O3 + 2HCL —> 2NaCL + H2O + S + S02 |
CHEMICAL COMPOSITION: | Na2S2O3.5H2O |
SOLUBILITY: | Soluble in Water |
SPECIFIC GRAVITY (20’C) | 1.7 |
MOLECULAR WEIGHT | 248.17 |
PH-Value: | 5.5 – 9.0 |
Sulphate & Sulphite (SO4) | 0.1% |
Sulphide (S): | 0.001% |
Calcium (CA): | 0.01% |
Heavy Metals (As PB): | 0.001% |
Assay: | 98-99% |
Safety data for sodium | thiosulphate |
Synonyms: | sodium thiosulphate pentahydrate, sodium thiosulfate 5-hydrate, sodium hyposulfite, sodium thiosulphate, sodium thiosulfate, ametox, antichlor |
Molecular formula | Na2S2O3 5H2O |
CAS No : | 10102-17-7 |
EC No: | 231-867-5 |
Physical data Appearance: | translucent crystals or white powder |
Melting point | 48 C |
Application :
- Acid (Organic) : 4-5
- Alkali : 4-5
- Hot processing: 5
- Light: 6-7
- Mercerizing :Redder-Apparent increase in strength
- Milling : 4-5
- Perspiration : 5
- Washing moderate : 5
- Washing Severe : 4-5