Chromium
Chromium
- CAS:
- 7440-47-3
- MF:
- Cr
- MW:
- 52
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Properties
- Melting point:
- 1857 °C (lit.)
- Boiling point:
- 2672 °C (lit.)
- Density
- 7.14 g/mL at 25 °C (lit.)
- Flash point:
- 50 °F
- storage temp.
- no restrictions.
- solubility
- reacts with dilute acid solutions
- form
- powder
- color
- Silver-gray
- Specific Gravity
- 7.2
- PH
- <1 (H2O, 20°C)
- Odor
- Odorless
- Resistivity
- 12.7 μΩ-cm, 20°C
- Water Solubility
- Insoluble in water.
- Merck
- 13,2252
- Exposure limits
- TLV-TWA: chromium metal 0.5 mg/m3 (ACGIH and MSHA), 1 mg/m3 (OSHA); Cr(II) and Cr(III) compounds 0.5 mg/m3 (ACGIH); Cr(VI) compounds, water soluble and certain water insoluble, 0.05 mg/m3 (ACGIH).
- Stability:
- Stable. Incompatible with carbonates, strong bases, mineral acids, lithium, sulfur dioxide, strong acids.
Safety Information
- Symbol(GHS)
GHS02,GHS08,GHS09
- Signal word
- Warning
- Hazard statements
- H410-H351-H228
- Precautionary statements
- P201-P202-P280-P308+P313-P405-P501a-P210-P240
- Hazard Codes
- F,C,Xn,Xi
- Risk Statements
- 11-20/21/22-34-40-23-67-36
- Safety Statements
- 16-26-36/37/39-45-36/37-27
- RIDADR
- UN 2924 3/PG 2
- OEB
- C
- OEL
- TWA: 0.5 mg/m3
- WGK Germany
- 3
- RTECS
- GB4200000
- Autoignition Temperature
- 580°C
- TSCA
- Yes
- HS Code
- 8112 21 90
- HazardClass
- 4.1
- PackingGroup
- III
- Toxicity
- Elemental chromium and certain chromium compounds have been designated as carcinogens, hazardous substances, hazardous waste constituents, and priority toxic pollutants. Some of those compounds designated as hazardous are chromic acetate, chromic acid, chromic sulfate, and chromous chloride. Although chromium in the 6+ state is regarded as being the most carcinogenic, there are 6+ compounds that appear to be non-carcinogenic. In addition to their possible carcinogenicity, chromium compounds may have local allergic effects leading to dermatitis. Systemically, 6+ chromium compounds are irritants to the respiratory system and may give rise to pulmonary edema.
- IDLA
- 250 mg Cr/m3
Use
The best-known use of chromium is for the plating of metal and plastic parts to producea shiny, reflective finish on automobile trim, household appliances, and other items where abright finish is considered attractive. It also protects iron and steel from corrosion.It is used to make alloys, especially stainless steel for cookware, and items for whichstrength and protection from rusting and high heat are important.Its compounds are used for high-temperature electrical equipment, for tanning leather, asa mordant (fixes the dyes in textiles so that they will not run), and as an antichalking agentfor paints.Some research has shown that, even though most chromium compounds are toxic, a smalltrace of chromium is important for a healthy diet for humans. A deficiency produces diabeteslike symptoms, which can be treated with a diet of whole-grain cereal, liver, and brewer’s yeast.
15 India supplier list of "Chromium"
- Product Name:Chromium
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg
- Company Type: Manufacturer
- Country/Region: Mumbai,INDIA
- Product Name:Chromium
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: West Bengal,INDIA
- Product Name:Chromium metal powder
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Mumbai,INDIA
- Product Name:Chromium
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1MT
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
- Product Name:ChromiumICPstandard
- Products Intro:Brand:sigma aldrich | Product Number:1.70374 | Purity:traceabletoSRMfromNISTCr(NO?)?inHNO?2-3%10000mg/lCrCertipur?
- Company Type: Trader
- Country/Region: Bangalore,INDIA
- Product Name:Chromium
- Company Type: Trader
- Country/Region: Mumbai,INDIA
- Product Name:Chromium
- Company Type: Trader
- Country/Region: New Delhi,INDIA
- Product Name:Chromium(Metal)PowderAR
- Products Intro:Brand:cdhfinechemical | Product Number:495790
- Company Type: Trader
- Country/Region: New Delhi,INDIA
- Product Name:Chromium Metal
- Company Type: Reagent
- Country/Region: Nagpur,INDIA
- Product Name:ChromiumPowder,99%-100mesh
- Products Intro:Brand:srlchem | Product Number:57555
- Company Type: Trader
- Country/Region: Mumbai,INDIA