Chromous acid (CAS 10049-05-5) — formula Cl2Cr, molecular weight 122.90; category fine chemicals.
| CAS Number | 10049-05-5 |
|---|---|
| Molecular Formula | Cl2Cr |
| Molecular Weight | 122.90 |
| Melting Point | 1515 °F (USCG, 1999) |
| Boiling Point | 1200 °C |
| Applications | Uses: Used in chromium plating and as a catalyst, oxygen absorbent, and textile mordant, [HSDB], Electroplating [Category: Plate], Textiles (Printing, Dyeing, or Finishing) [Category: Industry], In chromizing, in preparation of Cr metal, in catalysts for organic reactions, as O2 absorbent, in analysis, Reducing agent, catalyst, reagent, chromizing., Chromous chloride reaction followed by gas-liquid chromatography analysis is described for simultaneous confirmation of heptachlor & endrin residues., Gaseous chromium(II) halides ... are used to produce chromium diffusion layers on iron and nickel parts., Chromium(II) halides, 1) Use in fabrication of alloys, 2) use in preparation of alloy steels to enhance corrosion and heat resistance, 3) use in fabrication of plated products for decoration or increased wear resistance, 4) use in production of non-ferrous alloys to impart special qualities to the alloys, 5) use in production and processing of insoluble salts, 6) use as chemical intermediates, use in textile industry in dyeing, silk treating, printing, and moth proofing wool, 7) use in leather industry in tanning, use in photographic fixing baths, 8) use as catalysts for halogenation, alkylation, and catalytic cracking of hydrocarbons, and 9) use as fuel additives and propellant additives, in ceramics., Chromium metal and insoluble chromium salts, Chromium(II) chloride is used as a precursor to other inorganic and organometallic chromium complexes. (L519), Methods of Manufacturing: Reaction of the metal with anhydrous hydrogen chloride., For making chromous chloride (CrCl2), Chromium ores & coal are ground to 0.074 & 0.25 mm, respectively, pelleted, dried at 200 to 220 °C, & chlorinated at 800 to 950 °C in an electric shaft furnace. ... The chromium loss is 2 to 8 wt percent., ... Prepared by reaction of the hydrohalide and pure Cr metal at high temperatures, or anhydrous chromium(II) acetate ... at lower temperatures, or by hydrogen reduction of the Cr(III) halide at about 500-800 °C., Impurities: The iron content is 2 wt percent, maximum, & averages equal to or less than 0.2 wt percent, sometimes 0.03 to 0.08 wt percent., Formulations, Preparations: -80 mesh, 99.9% purity grades, available, There are a few forms of chromium available for nutritional supplementation. They include chromium picolinate, chromium polynicotinate, chromium chloride and high-chromium yeast. These forms are available as stand-alone supplements or in combination products., Chromium supplements, General Manufacturing Information: Chromium chloride (CrCl2): ACTIVE, Compounds of divalent chromium are extremely unstable in air and, therefore, are of only minor importance in industry., Chromium(II) compounds |
| Category | Basic Chemical Raw Materials |
Documented applications: Uses: Used in chromium plating and as a catalyst, oxygen absorbent, and textile mordant, [HSDB], Electroplating [Category: Plate], Textiles (Printing, Dyeing, or Finishing) [Category: Industry], In chromizing, in preparation of Cr metal, in catalysts for organic reactions, as O2 absorbent, in analysis, Reducing agent, catalyst, reagent, chromizing., Chromous chloride reaction followed by gas-liquid chromatography analysis is described for simultaneous confirmation of heptachlor & endrin residues., Gaseous chromium(II) halides ... are used to produce chromium diffusion layers on iron and nickel parts., Chromium(II) halides, 1) Use in fabrication of alloys, 2) use in preparation of alloy steels to enhance corrosion and heat resistance, 3) use in fabrication of plated products for decoration or increased wear resistance, 4) use in production of non-ferrous alloys to impart special qualities to the alloys, 5) use in production and processing of insoluble salts, 6) use as chemical intermediates, use in textile industry in dyeing, silk treating, printing, and moth proofing wool, 7) use in leather industry in tanning, use in photographic fixing baths, 8) use as catalysts for halogenation, alkylation, and catalytic cracking of hydrocarbons, and 9) use as fuel additives and propellant additives, in ceramics., Chromium metal and insoluble chromium salts, Chromium(II) chloride is used as a precursor to other inorganic and organometallic chromium complexes. (L519), Methods of Manufacturing: Reaction of the metal with anhydrous hydrogen chloride., For making chromous chloride (CrCl2), Chromium ores & coal are ground to 0.074 & 0.25 mm, respectively, pelleted, dried at 200 to 220 °C, & chlorinated at 800 to 950 °C in an electric shaft furnace. ... The chromium loss is 2 to 8 wt percent., ... Prepared by reaction of the hydrohalide and pure Cr metal at high temperatures, or anhydrous chromium(II) acetate ... at lower temperatures, or by hydrogen reduction of the Cr(III) halide at about 500-800 °C., Impurities: The iron content is 2 wt percent, maximum, & averages equal to or less than 0.2 wt percent, sometimes 0.03 to 0.08 wt percent., Formulations, Preparations: -80 mesh, 99.9% purity grades, available, There are a few forms of chromium available for nutritional supplementation. They include chromium picolinate, chromium polynicotinate, chromium chloride and high-chromium yeast. These forms are available as stand-alone supplements or in combination products., Chromium supplements, General Manufacturing Information: Chromium chloride (CrCl2): ACTIVE, Compounds of divalent chromium are extremely unstable in air and, therefore, are of only minor importance in industry., Chromium(II) compounds.
Chromous acid is a high-value fine compound with CAS registry number 10049-05-5 and molecular formula Cl2Cr (molecular weight 122.90), belonging to the fine chemicals segment of chemical raw materials.
CAS number: 10049-05-5
Its molecular formula Cl2Cr comprises 2 Cl, 1 Cr atoms.
Also known as: Chromous acid · 二氯化铬，氯化亚铬
Category: fine chemicals
The CAS registry number of Chromous acid is 10049-05-5.
Molecular formula Cl2Cr, molecular weight 122.90.
It is also registered under: Chromous acid, 二氯化铬，氯化亚铬.
Recorded applications: Uses: Used in chromium plating and as a catalyst, oxygen absorbent, and textile mordant, [HSDB], Electroplating [Category: Plate], Textiles (Printing, Dyeing, or Finishing) [Category: Industry], In chromizing, in preparation of Cr metal, in catalysts for organic reactions, as O2 absorbent, in analysis, Reducing agent, catalyst, reagent, chromizing., Chromous chloride reaction followed by gas-liquid chromatography analysis is described for simultaneous confirmation of heptachlor & endrin residues., Gaseous chromium(II) halides ... are used to produce chromium diffusion layers on iron and nickel parts., Chromium(II) halides, 1) Use in fabrication of alloys, 2) use in preparation of alloy steels to enhance corrosion and heat resistance, 3) use in fabrication of plated products for decoration or increased wear resistance, 4) use in production of non-ferrous alloys to impart special qualities to the alloys, 5) use in production and processing of insoluble salts, 6) use as chemical intermediates, use in textile industry in dyeing, silk treating, printing, and moth proofing wool, 7) use in leather industry in tanning, use in photographic fixing baths, 8) use as catalysts for halogenation, alkylation, and catalytic cracking of hydrocarbons, and 9) use as fuel additives and propellant additives, in ceramics., Chromium metal and insoluble chromium salts, Chromium(II) chloride is used as a precursor to other inorganic and organometallic chromium complexes. (L519), Methods of Manufacturing: Reaction of the metal with anhydrous hydrogen chloride., For making chromous chloride (CrCl2), Chromium ores & coal are ground to 0.074 & 0.25 mm, respectively, pelleted, dried at 200 to 220 °C, & chlorinated at 800 to 950 °C in an electric shaft furnace. ... The chromium loss is 2 to 8 wt percent., ... Prepared by reaction of the hydrohalide and pure Cr metal at high temperatures, or anhydrous chromium(II) acetate ... at lower temperatures, or by hydrogen reduction of the Cr(III) halide at about 500-800 °C., Impurities: The iron content is 2 wt percent, maximum, & averages equal to or less than 0.2 wt percent, sometimes 0.03 to 0.08 wt percent., Formulations, Preparations: -80 mesh, 99.9% purity grades, available, There are a few forms of chromium available for nutritional supplementation. They include chromium picolinate, chromium polynicotinate, chromium chloride and high-chromium yeast. These forms are available as stand-alone supplements or in combination products., Chromium supplements, General Manufacturing Information: Chromium chloride (CrCl2): ACTIVE, Compounds of divalent chromium are extremely unstable in air and, therefore, are of only minor importance in industry., Chromium(II) compounds.
Category: Basic Chemical Raw Materials.
Independent reference data for Chromous acid (CAS 10049-05-5), compiled from public chemistry databases.
| CAS Registry Number | 10049-05-5 |
|---|---|
| PubChem CID | 24871 |
| Molecular formula | Cl2Cr |
| IUPAC name | dichlorochromium |
| UNII (FDA) | CET32HKA21 |
| Molecular Weight | 122.90 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 121.878210 |
| Monoisotopic Mass | 121.878210 |
| Topological Polar Surface Area | 0 |
| Heavy Atom Count | 3 |
| Boiling Point | 1200 °C |
|---|---|
| Boiling Point | 1300 °C |
| Boiling Point | 1300 °C @760 [mm Hg] |
| Melting Point | 1515 °F (USCG, 1999) |
| Melting Point | 824 °C |
| Density | 2.751 at 14 °C/4 °C |
| Density | 2.8 g/cm³ |
| Density | 2.751 @ 14°C |
CHROMOUS CHLORIDE; Dichlorochromium; Chromium(II) chloride (1:2); chromium (II) chloride; CET32HKA21; RefChem:125926; DTXCID601334652; 233-163-3; 10049-05-5; CHROMIUM CHLORIDE (CrCl2); Chromium dichloride; chromium(II) chloride; DTXSID20905548; CrCl2; Chromium(II) chloride, anhydrous; HSDB 988
| Reported hazard statements | H302 (100%), H315 (88.9%), H319 (88.9%), H335 (86.7%) |
|---|
H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (88.9%): Causes skin irritation [Warning Skin corrosion/irritation]
Chromous acid · CAS 10049-05-5 · Cl2Cr. UNII CET32HKA21. Boiling Point: 1200 °C; Boiling Point: 1300 °C; Boiling Point: 1300 °C @760 [mm Hg].
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 二氯化铬，氯化亚铬