1310-66-3

Appearance：colourless, hygroscopic crystals

Density：1.51

Boiling Point：920ºC

Melting Point：462ºC

Water Solubility：109 g/L (20 ºC)

Stability：Stable. Incompatible with moisture. strong acids, carbon dioxide. Absorbs carbon dioxide from the air.

Storage Condition：Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area. Store protected from moisture.

CAS Number 1310-66-3 is an inorganic chemical compound known as sodium sulfide nonahydrate. This compound is a yellow crystalline solid that is primarily used in leather processing and dyeing, printing, textile and paper industries.

Sodium sulfide nonahydrate is commonly used in the leather industry for the degreasing and dehairing of animal hides. The compound acts as a depilatory agent to remove the unwanted hair, fats, and proteins from animal hides and skins. The chemical is also used in the tanning process to improve the hand-feel of the leather. 

In the textile industry, the compound is used to improve the dyeing and fixation of wool and synthetic fibers, and to improve the brightness of the fabrics. It is also used as a bleaching agent in the printing and dyeing processes.

Sodium sulfide nonahydrate is used in paper manufacturing as a reducing agent for bleaching and de-inking processes. The compound is also used for reducing and sizing in the production of paper.

Sodium sulfide nonahydrate is highly soluble in water and has a odor. The compound is corrosive in nature and can cause damage to the skin, eyes and respiratory system if inhaled or ingested. It is important to exercise caution when handling the compound and to wear protective equipment while using it.