Product Specification 

SUBSTANCE: Sodium Thiosulphate Pentahydrate

CHEMICAL FAMILY:  inorganic compound

Minimum Assay: >99.0%

Molecular Formula: Na2S2O3•5H2O 

Molecular Weight: 241.17 g/mol

Solubility in water (% weight): 79g/100 ml water @ 40 C

Melting Point: 48 °C

Calcium (Ca): <0.30%

Iron (Fe): <10ppm

Heavy Metals (as Pb): <10ppm

Acidity: <0.01%

Alkalinity: <0.06%

ACUTE HEALTH EFFECTS:

Inhalation - Unlikely route of exposure. Inhalation of sprayed droplets may result in soreness of the throat, mouth and nose.

Ingestion- Unlikely route of exposure without deliberate abuse. There may be soreness and redness of mouth and throat. A soapy taste may be reported. May cause irritation/discomfort to mucous membranes. Similar but less severe symptoms will be seen if dilute chemical is ingested.

Skin contact- Prolonged or repeated contact with skin may cause irritation, redness and dermatitis. Use solutions may cause mild irritation, especially to open cuts and abrasions. Eye contact May cause redness and irritation (stinging sensation) to eyes. 

EMERGENCY AND FIRST AID PROCEDURES 

 Inhalation -Remove affected person from source of contamination. Move affected person to fresh air and keep warm and at rest in a position comfortable for breathing. If breathing stops, provide artificial respiration. Get medical attention if any discomfort continues.

Ingestion- Do not induce vomiting. Rinse mouth thoroughly with water. Place unconscious person on the side in the recovery position and ensure breathing can take place. Get medical attention.

Skin contact- Remove contaminated clothing and rinse skin thoroughly with water. Continue to rinse for at least 15 minutes. Get medical attention if any discomfort continues. Eye contact Remove any contact lenses and open eyelids wide apart. Rinse immediately with plenty of water. Continue to rinse for at least 15 minutes and get medical attention