Basic information
- CAS
10141-00-1- Standard SMILES
O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Cr+3].[K+]- InChIKey
OIDPCXKPHYRNKH-UHFFFAOYSA-J- Molecular formula
- CrKO8S2
- Average molar mass
- 283.22 g/mol
- Monoisotopic mass
- 282.80767
Overview
Chromium(III) potassium sulfate is a sulfate of chromium and potassium. It can be used for leather tanning. Chromium is a chemical element which has the symbol Cr and atomic number 24. It is found naturally occuring in rocks, animals, plants, and soil, and is usually mined as chromite ore. Chromium is most toxic in its +6 oxidation state (chromium(VI)) due to its greater ability to enter cells and higher redox potential. Trivalent chromium (chromium(III)) however, is biologically necessary for sugar and lipid metabolism in humans. (L17, L514)
Names & identifiers
- Preferred name
- Sulfuric acid, chromium(3+) potassium salt (2:1:1)
- IUPAC
- potassium;chromium(3+);disulfate
- English name
- CHROMIUM POTASSIUM SULFATE
- Molecular formula
- CrH3KO4S
- Molecular weight
- 190.17
Names & synonyms
10141-00-1Potassium chromic sulfateChromic potassium sulphatePotassium chromic sulphateCHROMIC POTASSIUM SULFATE0% Basicity chrome alumSulfuric acid, chromium(3+) potassium salt (2:1:1)Chromium potassium sulfate (CrK(SO4)2)579U79PAICPotassium chromium disulfate (KCr(SO4)2)DTXSID00890645chromalum
Show more names
ALUM CHROMEchromepotashalumcrystalchromealum0%basicitychromealumchromicpotassiumsulfatepotassiumchromicsulfatepotassiumchromicsulphateAMMONIUM CHROMIUM SULFATECHROMIUM AMMONIUM SULFATEchromiumpotassiumsulphate
RefChem:576866DTXCID301030930233-401-6Chrome alumChromium potassium sulfateChromium potassium bis(sulphate)10279-63-7Chromium(III) potassium sulfate
Database identifiers
- CAS
Properties
Computed structural properties
- Topological polar surface area
- 177 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 8
- Rotatable bonds
- 0
- Heavy atoms
- 12
- Formal charge
- 0
- Complexity
- 62.2
Experimental & physicochemical properties
Chemical ClassesMetals -> Chromium Compounds, Inorganic
Food Contact Substances
FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR
FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR
Physical DescriptionViolet-red crystals; soluble in water; [Hawley] Red-violet odorless granules; [Mallinckrodt Baker MSDS]
Physicochemical properties
- Melting point
- 89 °C · 89°C
- Density
- 1.12 g/mL · 1.12 g/mL at 20 °C
- form
- solid
- Major Application
- environmentalgeneral analytical
- InChI
- 1S/Cr.K.2H2O4S/c;;2*1-5(2,3)4/h;;2*(H2,1,2,3,4)/q+3;+1;;/p-4
- InChIKey
- OIDPCXKPHYRNKH-UHFFFAOYSA-J
- SMILES
- [K+].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
- FDA 21 CFR
- 175.105 · 175.105
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Warning
H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 53 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
This chemical does not meet GHS hazard criteria for 75% (3 of 4) of all reports.
Warning
Hazard information
Regulatory Information
Chemical: Sulfuric acid, chromium(3+) potassium salt (2:1:1)
REACH registered substance: Chromium potassium bis(sulphate) (EC: 233-401-6)
Sulfuric acid, chromium(3+) potassium salt (2:1:1): Does not have an individual approval but may be used under an appropriate group standard
Sulfuric acid, chromium potassium salt: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazards Summary
CrIII compounds do not cause chrome ulcerations but may cause allergic dermatitis in workers with prior sensitization to CrVI compounds. [ILO Encyclo] CrIII is an essential trace mineral in the human diet. [ATSDR Case Studies] An irritant that may causes skin ulcerations and eye injury on prolonged contact; Harmful by ingestion and inhalation; [Mallinckrodt Baker MSDS] See Chromium.
Hazard Classes and Categories
Skin Irrit. 2 (100%)
Skin Irrit. 2 (25%)
Safety & protection
Chemistry & industry
Pharmacology
Metabolism/Metabolites
Chromium is absorbed from oral, inhalation, or dermal exposure and distributes to nearly all tissues, with the highest concentrations found in kidney and liver. Bone is also a major storage site and may contribute to long-term retention. Hexavalent chromium's similarity to sulfate and chromate allow it to be transported into cells via sulfate transport mechanisms. Inside the cell, hexavalent chromium is reduced first to pentavalent chromium, then to trivalent chromium by many substances including ascorbate, glutathione, and nicotinamide adenine dinucleotide. Chromium is almost entirely excreted with the urine. (A12, L16)
Uses & manufacturing
Uses
Used in dyeing (mordant), tanning, printing calico, developing photographs, and producing glue, gum, waterproof fabrics, inks, and other chromium compounds; [Merck Index]
Leather Tanning and Processing [Category: Industry]
Chromium(III) potassium sulfate can be used for leather tanning. (L514)
General Manufacturing Information
Sulfuric acid, chromium(3+) potassium salt (2:1:1): ACTIVE
Sulfuric acid, chromium potassium salt (1:?:?): ACTIVE
Applications
DescriptionChromium potassium sulfate is a crystallinecompound whose color may range from violet-red to black.Molecular weight =287.3; Freezing/Melting point =89℃;Soluble in water
UsesTanning (chrome-tan liquors), textile dye (mordant), photography (fixing bath), ceramics.
General DescriptionThe higher the pH more is the chromium (III) (crystal growth suppressor) adsorbed, on the surface of potassium sulfate crystal powder which is suspended in saturated solutions.
Upstream & downstream products
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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