Basic chromic sulfate
- CAS NO.:39380-78-4
- Empirical Formula: CrH3O12S3
- Molecular Weight: 343.20772
- MDL number: MFCD28975874
- EINECS: 619-674-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-21 17:11:28
What is Basic chromic sulfate?
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.
The Uses of Basic chromic sulfate
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.
Properties of Basic chromic sulfate
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 information for Basic chromic sulfate
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H314:Skin corrosion/irritation |
Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Basic chromic sulfate
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