Silver nitrate
CAS number 7761-88-8
Molecular weight AgNO3 = 169.9
Assay > 99.8 %
Used with Sodium thiosulphate to produce a Silver thiosulphatesolution (STS) containing the ethylene inhibitor [Ag(S2O3)2]3-. Prepare a 0.1 M Sodium thiosulphate stock solution by dissolving 1.58 g of Sodium thiosulphate into 100 ml of water. Prepare a 0.1 M Silver nitrate stock solution by dissolving 1.7 g of Silver nitrate into 100 ml of water. Store the stock solutions in the dark until needed to prepare the Silver thiosulphate solution (STS).In general the (STS) is prepared with a molar ratio between silver and thiosulphate of 1:4. Nearly all of the silver present in the solution is in the form of [Ag(S2O3)2]3-, the active complex for ethylene effect inhibition. Prepare a 0.02 M Silver thiosulphate solution (STS) by slowly pouring 20 ml of 0.1 M Silver nitrate stock solution into 80 ml of 0.1 M sodium thiosulphate stock solution. The Silver thiosulphate solution (STS) can be stored in the refrigerator for up to one month. However, preparation of the Silver thiosulphate solution (STS) just prior to use is recommended.
Storage condition
- Store at room temperature
- Soluble in water (2150 g/l / 20°C )
- Protect from light
Hazard statements
- H272 May intensify fire; oxidizer
- H290 May be corrosive to metals
- H314 Causes severe skin burns and eye damage
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P301 IF SWALLOWED:
- P304 IF INHALED:
- P305 IF IN EYES:
- P330 Rinse mouth
- P331 Do NOT induce vomiting
- P340 Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P351 Rinse continuously with water for several minutes
- P370 In case of fire:
- P378 Use