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| CAS No.: | 10141-00-1 |
|---|---|
| Name: | CHROMIUM POTASSIUM SULFATE |
| Molecular Structure: | |
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|
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| Formula: | Cr. 2 H2 O4 S . K |
| Molecular Weight: | 283.22 |
| Synonyms: | Chromealum; Chrome potash alum; Chromic potassium sulfate; Chromium potassium alum;Chromium potassium bis(sulfate); Chromium potassium disulfate; Chromiumpotassium sulfate; Chromium potassium sulfate (CrK(SO4)2); Potassium chromiumalum; Potassium chromium disulfate(kcr(so4)2); Potassium chromium sulfate(KCr(SO4)2) |
| EINECS: | 233-401-6 |
| Density: | 1.12 g/mL at 20oC |
| Melting Point: | 89 °C |
| Boiling Point: | 330 °C at 760 mmHg |
| Solubility: | Solubility in water 244 g/100 g (25 °C) |
| Risk Codes: | 36/37/38 |
| Safety: | 26 |
| PSA: | 177.28000 |
| LogP: | -0.51440 |
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Chemistry
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.
Uses
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.
Production
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 ↑
Toxicity Data With Reference
| 1. | cyt-ham:ovr 1 mg/L | CRNGDP Carcinogenesis. 3 (1982),1331. | ||
| 2. | sce-ham:ovr 1 mg/L | CRNGDP Carcinogenesis. 3 (1982),1331. |
Consensus Reports
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.
Safety Profile
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
Standards and Recommendations
OSHA PEL: TWA 0.5 mg(Cr)/m3
ACGIH TLV: TWA 0.5 mg(Cr)/m3; Not Classifiable as a Carcinogen