Basic chromic sulfate Property

Melting point:

90°C

Density 

1.7

form 

Solid

color 

Green Crystalline

Odor

Odorless

PH Range

1.5 - 2.5

Water Solubility 

Soluble in water

CAS DataBase Reference

39380-78-4(CAS DataBase Reference)

EPA Substance Registry System

Chromium hydroxide sulfate (Cr(OH)(SO4))(39380-78-4)

Safety

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45

RIDADR 

UN1759 8/PG 2

RTECS 

GB6240000

PackingGroup 

II

Toxicity

mouse,LD50,oral,2900mg/kg (2900mg/kg),BEHAVIORAL: ATAXIABEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)BEHAVIORAL: IRRITABILITY,Toksikologicheskii Vestnik. Vol. (2), Pg. 34, 1998.

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

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

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

P310Immediately call a POISON CENTER or doctor/physician.

Basic chromic sulfate Chemical Properties,Usage,Production

Description

Basic chromic sulfate, chromium(III) sulfate, or chromic sulfate, is a chemical compound with the formula Cr(OH)SO4. It is derived from the reaction between chromium(III) oxide (Cr2O3) or chromium(III) hydroxide (Cr(OH)3) and sulfuric acid (H2SO4). Basic chromium sulfate (Basic chromic sulfate) is primarily used in the tanning industry as a tanning agent and a leather preservative. It plays a crucial role in converting raw hides or skins into leather. The compound helps to cross-link collagen fibers, making the leather more stable, resistant to decomposition, and less susceptible to shrinkage. It also enhances the leather's ability to resist water and impart a soft texture.

Uses

Basic chromic sulfate is primarily used in the tanning industry as a tanning agent and a leather preservative. It is also employed in other applications, including:
Dyestuff and Pigment Production: It serves as a mordant, a substance that enhances the affinity of dyes or pigments for textile fibers. It helps to fix dyes onto fabrics and improve colorfastness.
Wood Preservation: Basic chromium sulfate is used as a preservative to protect timber from decay, fungal growth, and insect attacks. It is applied by pressure treatment or dipping to extend the lifespan of wood used in outdoor applications.
Corrosion Inhibition: It is sometimes used as a corrosion inhibitor in cooling water systems, particularly in the automotive and aerospace industries. It helps to prevent the formation of rust and protect metal surfaces.