Chromium manufacturers and suppliers

Chromium suppliers

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

Specific Gravity: 7.2

color: Silver-gray

Odor: Odorless

Flame Color: Silvery white

PH: <1 (H2O, 20°C)

Resistivity: 12.7 μΩ-cm, 20°C

Water Solubility: Insoluble in water.

Electrical Conductivity: 7.9× 10⁶S/m

Thermal Conductivity: 94 W/(m·K)

Specific Heat Capacity: Cp(crystal): 0.45 J/(g·K); Cp(gas): 0.4 J/(g·K), at 25℃

Merck: 13,2252

Exposure limits: ACGIH:TLV-TWA 0.0002 mg/m3,as Cr(VI),Inhalable particulate matter; TLV-STEL 0.0005 mg/m3,as Cr(VI),Inhalable particulate matter
OSHA:PEL-TWA 0.5 mg/m3
NIOSH:REL-TWA 0.5 mg/m3

Stability:: Stable. Incompatible with carbonates, strong bases, mineral acids, lithium, sulfur dioxide, strong acids.

Cosmetics Ingredients Functions: COLORANT

InChI: 1S/Cr

InChIKey: VYZAMTAEIAYCRO-UHFFFAOYSA-N

SMILES: [Cr]

Hardness, Brinell: 125

Hardness, Knoop: 144, Converted from Brinell

Hardness, Rockwell B: 72, Converted from Brinell

Hardness, Vickers: 131, Converted from Brinell

Modulus of Elasticity: 248 GPa

CAS DataBase Reference: 7440-47-3(CAS DataBase Reference)

NIST Chemistry Reference: Chromium(7440-47-3)

IARC: 3 (Vol. Sup 7, 49) 1990

EPA Substance Registry System: Chromium (7440-47-3)

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: TSCA listed

HS Code: 8112 21 90

HazardClass: 4.1

PackingGroup: III

Hazardous Substances Data: 7440-47-3(Hazardous Substances Data)

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

REACH Registrations: Active

Limited Quantities: 5.0 Kg (11 lbs) (solid)

Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

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.

You can find Chromium suppliers, manufacturers, and distributors from countries such as China, United States and the India here. Browse to the tetrahydrofuran product information displayed by the supplier, as well as the supplier's contact and capability information.