Chromic potassium sulfate dodecahydrate

HCID 24596

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Basic information

CAS: 7788-99-0
Standard SMILES: O.O.O.O.O.O.O.O.O.O.O.O.O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Cr+3].[K+]
InChIKey: ZFVHBEKVAITXHW-UHFFFAOYSA-J
Molecular formula: CrH24KO20S2
Average molar mass: 499.4 g/mol
Monoisotopic mass: 498.934447

Overview

See also: Chromium (III) potassium sulphate (annotation moved to) ... View More ...

Names & identifiers

Preferred name: Chromic potassium sulfate dodecahydrate
IUPAC: potassium;chromium(3+);disulfate;dodecahydrate
English name: Chromium potassium sulfate dodecahydrate
Molecular formula: CrH5KO5S
Molecular weight: 208.19

Names & synonyms

Chromium potassium sulfate dodecahydrateChromic potassium sulfate dodecahydrateChrome alum (dodecahydrate)Chromium(III) potassium sulfate dodecahydratePotassium chromium alum dodecahydrateCCRIS 8929Chromium(III) potassium sulfate (1:1:2), dodecahydrateSulfuric acid, chromium(3+)potassium salt(2:1:1), dodecahydrateCHROMIUM KALI SULPHURICUMPotassium chromium(III) sulfate dodecahydrateDTXSID90228493CHROMIUM(III) POTASSIUM DISULFATE DODECAHYDRATE

Show more names

CHROME ALUMabs9131ALUM CHROMEchromic alumChromium potassium spotassium chrome alumPOTASSIUM CHROMIUM ALUMCHROME ALUM, DODECAHYDRATECHROMIC POTASSIUM SULPHATECHROMIUM POTASSIUM SULFATE

CHROMIUM KALI SULPHURICUM [HPUS]CHROMIC POTASSIUM SULFATE DODECAHYDRATE [MI]RefChem:576867DTXCID101509847788-99-0UNII-H54D055WX6H54D055WX6potassium;chromium(3+);disulfate;dodecahydrate

Database identifiers

CAS: 7788-99-0
PubChem CID: 24596
DTXSID: DTXSID90228493
UNII: H54D055WX6

Properties

Computed structural properties

Topological polar surface area: 189 Å²
Hydrogen bond donors: 12
Hydrogen bond acceptors: 20
Rotatable bonds: 0
Heavy atoms: 24
Formal charge: 0
Complexity: 62.2

Experimental & physicochemical properties

Chemical ClassesMetals -> Chromium Compounds, Inorganic

Density1.83 @25 °C

Physical DescriptionViolet-red to black crystals; Solutions turn green when heated; [CHEMINFO] Soluble in water; [Alfa Aesar]

Physicochemical properties

Melting point: 89 °C · 89 °C(lit.)
Density: 1.83 · 1.83
bulk density: 800 · 800-1000kg/m3
storage temp.: 15 °C · Store at +15°C to +25°C.
solubility: water: soluble(lit.)
form: Solid
color: Violet
PH: 3 · 3 (50g/l, H2O, 20℃)
Odor: Odorless
Water Solubility: 24 g/100 · 24 g/100 mL (15 ºC)
Merck: 14 · 14,2229
Exposure limits: 25 mg/m3; · NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3
Stability: Stable. Incompatible with magnesium, aluminium.
InChI: InChI=1S/Cr.K.H2O4S.H2O.H/c;;1-5(2,3)4;;/h;;(H2,1,2,3,4);1H2;
InChIKey: WAYJJQPENBTMDM-UHFFFAOYSA-N
SMILES: S(O)(O)(=O)=O.[Cr].[KH].O
Indirect Additives used in Food Contact Substances: CHROME ALUM
CAS DataBase Reference: 7788 · 7788-99-0(CAS DataBase Reference)
FDA 21 CFR: 175.105 · 175.105; 178.3120
FDA UNII: 54 D055WX6 · H54D055WX6
UNSPSC Code: 12352302 · 12352302
NACRES: 24 · NB.24
Symbol(GHS): 7 · GHS07
Signal word: Warning
Hazard statements: 315 · H315-H319
Precautionary statements: 264 · P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313
Hazard Codes: Xi
Risk Statements: 36 · 36/38
Safety Statements: 22 · 22-24/25-37/39-26
WGK Germany: 2 · 2
RTECS: 6850000 · GB6850000
TSCA: Yes
HS Code: 28332990 · 28332990
Storage Class: 11 · 11 - Combustible Solids
Hazard Classifications: 2 Skin · Eye Irrit. 2Skin Irrit. 2

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

Hazard information

Hazards SummaryCrIII 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] See Chromium.

Safety & protection

Threshold Limit Values (TLV)0.003 [mg/m3], as Cr(III), inhalable particulate matter

Permissible Exposure Limit (PEL)0.5 [mg/m3]

Protective Action Criteria (PAC) · 3 items

0.67 [mg/m3]

7.4 [mg/m3]

44 [mg/m3]

Toxicology

Adverse EffectsSkin Sensitizer - An agent that can induce an allergic reaction in the skin.

Safety data

wgk: 2
tsca: Yes
rtecs: GB6850000
hs_code: 28332990
risk_code: 36/38
Signal word: Warning
Symbol(GHS): GHS07
hazard_code: Xi
safety_code: 22-24/25-37/39-26
Storage Class: 11 - Combustible Solids
Hazard statements: H315-H319
Hazard Classifications: Eye Irrit. 2Skin Irrit. 2
Precautionary statements: P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313

Chemistry & industry

Uses & manufacturing

Uses · 2 items

Used in dyeing (mordant), tanning, printing calico, developing photographs, and producing glue, gum, and waterproof fabrics; [Merck Index]

Leather Tanning and Processing [Category: Industry]

Household ProductsInformation on 4 consumer products that contain Potassium chromium alum dodecahydrate in the following categories is provided:

Applications · 4 items

UsesChromium potassium sulfate dodecahydrate is used in method for synthesizing metal-organic terephthalate structure MIL-101 (Cr).

UsesChromium(III) potassium sulfate dodecahydrate [KCr(SO4)2.12H2O] has been used for the dissolution of gelatin in various studies.It may be used as a starting material in the synthesis of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3 to be used as solar absorbers.

UsesChromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions.

General DescriptionChromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is a violet colored solid. It has been synthesized by reacting sulfur dioxide with potassium dichromate (diisolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry.

Upstream & downstream products

Upstream raw materials

Potassium dichromate Sulfuric acid

Downstream products

Solvent Red BL CHROMIUM POTASSIUM SULFATE Neutral Grey 2BL Neutral Black 2S-RL Neutral Bordeaux D-BN Solvent Red KL

Suppliers100 total

国药集团化学试剂有限公司86-21-63210123 · [email protected]

北京华美互利生物化工010-56205725 · [email protected]

湖北永阔科技有限公司027-59223108 15972152991 · [email protected]

上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]

湖北万得化工有限公司15377098680 15377098680 · [email protected]

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Compound notes

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