IUPAC Name: Potassium chromium(3+) disulfate
Synonyms: Potassium chromium sulfate ; Basicitychromealum ; Chromepotashalum ; Chromicpotassiumsulfate ; Chromiumpotassiumsulfate(1:1:2) ; Chromiumpotassiumsulphate ; Crystalchromealum ; Potassiumchromicsulfate
Product Categories: Inorganics;Analytical Reagents;Waste Water;Water Test
CAS NO: 10141-00-1
Molecular Formula: CrKO₈S₂
Molecular Weight: 283.22
Molecular Structure:
EINECS: 233-401-6
Mol File: 10141-00-1.mol
Enthalpy of Vaporization: 62.94 kJ/mol
Boiling Point: 330 °C at 760 mmHg
Vapour Pressure: 3.35E-05 mmHg at 25°C
Density 1.12 g/mL at 20 °C
Melting point: 89 °C
Appearance: Potassium chromic sulfate (CAS NO.10141-00-1) is purple or purple equiaxed crystal octahedral crystals, easily made into large particles crystal.
Solubility: Potassium chromic sulfate (CAS NO.10141-00-1) is soluble in water, dilute acid, insoluble in alcohol. Purple-red solution was dissolved in water,
Nature: When heated to 70 °C, green solution,then turns into purple after cooling gradient . Easy to absorb moisture in dry air.

1. Potassium chromic sulfate (CAS NO.10141-00-1) is used in tanning leather noodle.
2. Potassium chromic sulfate (CAS NO.10141-00-1) is used as photographic film hardener in a photographic fixer.
3. Potassium chromic sulfate (CAS NO.10141-00-1) is used as Cr-complexing agent in dye industry for the production of Reactive Red Brown K-B3R, neutral purple BL, neutral orange pink RL and BL neutral products .
4. Potassium chromic sulfate (CAS NO.10141-00-1) is used as a mordant in printing and dyeing industry .
5. Potassium chromic sulfate (CAS NO.10141-00-1) is used as a waterproofing agent.
6. Potassium chromic sulfate (CAS NO.10141-00-1) is used for oil drilling.

 Potassium chromic sulfate (CAS NO.10141-00-1) can be obtained from reduction of organic matter and sulfur dioxide.
2K₂Cr₂O₇ +8 H₂SO₄ +40 H₂O +3 C → CrKO₈S₂ +3 CO₂ ↑

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 ,1990,p. 49.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 ,1990,p. 49.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 ,1990,p. 49.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Chromium and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Mutation data reported. Questionable carcinogen. When heated to decomposition it emits toxic fumes of K₂O. See also CHROMIUM COMPOUNDS and SULFATES.
Risk Statements 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements 26
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
RTECS GB6845000
 

OSHA PEL: TWA 0.5 mg(Cr)/m³
ACGIH TLV: TWA 0.5 mg(Cr)/m³; Not Classifiable as a Carcinogen