Calcium sulfide (Ca(Sx)) Property

Boiling point:

104.8℃[at 101 325 Pa]

Density 

1.28 g/cm3(Temp: 15.6 °C)

vapor pressure 

23.388hPa at 20℃

Water Solubility 

99g/L at 25℃

EPA Substance Registry System

Calcium polysulfide (1344-81-6)

Safety

Hazard Codes 

Xi,N

Risk Statements 

31-36/37/38-50

Safety Statements 

28-61

Hazardous Substances Data

1344-81-6(Hazardous Substances Data)

Toxicity

man,TDLo,oral,891mg/kg (891mg/kg),GASTROINTESTINAL: ALTERATION IN GASTRIC SECRETIONBEHAVIORAL: MUSCLE WEAKNESS,Journal of Toxicology, Clinical Toxicology. Vol. 35, Pg. 299, 1997.

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

H400Very toxic to aquatic life

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

Calcium sulfide (Ca(Sx)) Chemical Properties,Usage,Production

Uses

Calcium sulfide (Ca(Sx)) can be used to control diseases such as powdery mildew and rust of crops and fruit trees, as well as cotton spider mites, etc. In recent years, it has been used in the field of chromium pollution remediation, and the process of reducing Cr(VI) to Cr(III) does not change the pH value of the water body.

Synthesis

Calcium sulfide (Ca(Sx)) is boiled with quicklime, sulfur and water. First mix the sulfur powder with a small amount of water into a paste, slowly pour it into the water and heat it to boil, add quicklime after boiling, stir while pouring, keep boiling for 50-60 minutes, until the color of the solution in the pot turns reddish-brown. The residue starts to turn green to get the product.