Chromium(III) fluoride
Chemical Properties Uses Preparation- Product Name
- Chromium(III) fluoride
- CAS No.
- 7788-97-8
- Chemical Name
- Chromium(III) fluoride
- Synonyms
- CrF3;Fluorchrome;Chromfluorid;Chrome fluorure;CHROMIC FLUORIDE;CHROMIUM FLUORIDE;Fluoride chromium;Chromic trifluoride;CHROMIUM TRIFLUORIDE;chromicfluoride,solid
- CBNumber
- CB8230982
- Molecular Formula
- CrF3
- Formula Weight
- 108.99
- MOL File
- 7788-97-8.mol
Chromium(III) fluoride Property
- Melting point:
- >1000°C
- Density
- 3.8 g/mL at 25 °C(lit.)
- vapor pressure
- 0Pa at 20℃
- solubility
- insoluble in H2O, ethanol
- form
- powder
- color
- Green
- Water Solubility
- insoluble H2O; soluble HCl, violet color [MER06]
- Sensitive
- Hygroscopic
- Merck
- 14,2223
- Exposure limits
- ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; IDLH 25 mg/m3; TWA 0.5 mg/m3 - LogP
- -2 at 20℃
- CAS DataBase Reference
- 7788-97-8(CAS DataBase Reference)
- EPA Substance Registry System
- Chromium fluoride (CrF3) (7788-97-8)
Safety
- Hazard Codes
- C
- Risk Statements
- 20/21/22-31-34
- Safety Statements
- 26-27-28-36/37/39-45
- RIDADR
- UN 1756 8/PG 2
- WGK Germany
- 3
- RTECS
- GB6125000
- Hazard Note
- Corrosive
- TSCA
- Yes
- HazardClass
- 8
- PackingGroup
- II
- HS Code
- 28261990
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H302Harmful if swallowed
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H332Harmful if inhaled
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405Store locked up.
N-Bromosuccinimide Price
- Product number
- 035741
- Product name
- Chromium(III) fluoride, 99.98% (metals basis)
- Packaging
- 2g
- Price
- $161
- Updated
- 2024/03/01
- Product number
- 035741
- Product name
- Chromium(III) fluoride, 99.98% (metals basis)
- Packaging
- 10g
- Price
- $618.65
- Updated
- 2024/03/01
- Product number
- 93-2434
- Product name
- Chromium(III) fluoride, anhydrous, 98%
- Packaging
- 1g
- Price
- $44
- Updated
- 2024/03/01
- Product number
- 93-2434
- Product name
- Chromium(III) fluoride, anhydrous, 98%
- Packaging
- 5g
- Price
- $172
- Updated
- 2024/03/01
- Product number
- 93-2434
- Product name
- Chromium(III) fluoride, anhydrous, 98%
- Packaging
- 25g
- Price
- $690
- Updated
- 2024/03/01
Chromium(III) fluoride Chemical Properties,Usage,Production
Chemical Properties
Chromium(III) fluoride [7788-97-8], CrF3, Mr 108.99. The anhydrous compound forms highly refractive rhombohedral crystals. It melts above 1000°C and is distinctly volatile between 1100 and 1200 °C. Chromium(III) fluoride is insoluble in water if no divalent chromium is present. Double compounds are formed with other metal fluorides, e.g., green CrF3 · 2KF·H2O.
Hydrates are known which contain three [16671-27-5] to nine [68374-27-6] molecules of water. The violet hexaaquochromium(III) fluoride, [Cr(H2O)6]F3, and its trihydrate, [Cr(H2O)6]F3 · 3H2O, can be obtained from hexaaquochromium(III) salt solutions and alkali fluorides. Products containing lesswater are green. The composition of the industrial product corresponds approximately to CrF3 · 3.5H2O and the product contains about 30 % chromium.
For the production of chromium(III) fluoride hydrate, chromium(III) oxide hydrate is dissolved in hot aqueous hydrofluoric acid and the green salt crystallizes. Chromium(III) fluoride is used in the textile industry for mordanting wool, for chromating dyestuffs, and in vigoureux printing. Chromium(III) fluorides have also found application in rust-prevention paints as corrosion inhibitors.
Uses
Some important uses are in printing and dyeing woolens; mothproofing of woolen materials; metal polishing; coloring marbles; and as a catalyst in halogenation reactions.
Preparation
Chromium(III) fluoride may be prepared by heating chromium trichloride under a stream of hydrogen fluoride:
The compound may be prepared by the reaction of chromium hydroxide with hydrofluoric acid:
Chemical Properties
Green crystalline powder or crystals
Physical properties
Dark green needles (anhydrous salt) or green hexagonal crystals (trihydrate); density 3.8 g/cm3 (anhydrous fluoride), 2.2 g/cm3 (trihydrate); anhydrous salt melts at 1,100°C and sublimes above this temperature; practically insoluble in water and ethanol (anhydrous salt); trihydrate sparingly soluble in water; soluble in HCl forming a violet solution.
Uses
Used in the preparation of a mixed-metal fluoride catalyst for synthesis of HFC-134a.
Uses
Printing and dyeing woolens, moth-proofing, halogenation catalyst.
General Description
Chromic fluoride solution is a green crystalline solid dissolved in water. CHROMIUM(III) FLUORIDE is corrosive to metals and tissue.
Air & Water Reactions
Water soluble.
Reactivity Profile
Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas.
Hazard
Irritant to skin and eyes, especially in solution.
Health Hazard
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Flammability and Explosibility
Not classified
Safety Profile
A poison by ingestion. A corrosive. When heated to decomposition it emits toxic vapors of Cr and F-.
Chromium(III) fluoride Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Chromium(III) fluoride manufacturers
- Product
- CHROMIUM(III) FLUORIDE 7788-97-8
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-07-10
- Product
- CHROMIUM(III) FLUORIDE 7788-97-8
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-07-09
- Product
- CHROMIUM(III) FLUORIDE 7788-97-8
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-06-27