铬(III)原子吸收标准溶液

Description

Chrome · CAS 7440-47-3 · Cr. UNII 0R0008Q3JB. Boiling Point: 4788 °F at 760 mmHg (NTP, 1992); Boiling Point: 2642; Boiling Point: 4788 ° F.

Identification

CAS Registry Number	7440-47-3
PubChem CID	23976
Molecular formula	Cr
IUPAC name	chromium
UNII (FDA)	0R0008Q3JB

Computed Descriptors

Molecular Weight	51.996
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	51.940505
Monoisotopic Mass	51.940505
Topological Polar Surface Area	0
Heavy Atom Count	1
Formal Charge	0
Complexity	0

Physical & Chemical Properties

Boiling Point	4788 °F at 760 mmHg (NTP, 1992)
Boiling Point	2642
Boiling Point	4788 ° F
Boiling Point	2642 °C
Boiling Point	4788 °F
Boiling Point	2671 °C @760 [mm Hg]
Melting Point	3452 °F (NTP, 1992)
Melting Point	1900
Melting Point	3452 °F
Melting Point	1907 °C

Physical description & handling notes

• Chromium is a very hard gray solid with a metallic luster. (NTP, 1992)
• Dry Powder; Large Crystals; Dry Powder; Other Solid; Dry Powder; Other Solid; Large Crystals; CBI
• Blue-white to steel-gray, lustrous, brittle, hard, odorless solid; [NIOSH]
• GREY POWDER.
• Blue-white to steel-gray, lustrous, brittle, hard, odorless solid.
• Appearance and odor vary depending upon the specific compound.

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Cosmetics ingredient -> Other (Specify)
GHS notification summary	50% (1202 / 2404)

GHS Hazard Classification

GHS notification summary	50% (1202 / 2404)
Reported hazard statements	H317 (20.7%), H319 (19.1%), H334 (20.3%), H335, H320, H341, H371, H400

Documented Uses

• The metal chromium is used mainly for making steel and other alloys.
• Steel Producing [Category: Industry]
• Abrasive Blasting [Category: Clean]
• Metal Preparation and Pouring [Category: Foundry]
• Metal Machining [Category: Heat or Machine]
• Electroplating [Category: Plate]

Synonyms

CHROMIUM; 7440-47-3; Chrome; Chromium metal; Chrom; Chromium, elemental; Dinakrome; BioChrome; DTXSID3031022; CHEBI:28073; 0R0008Q3JB; Dietary Chromium; Chromium Metallicum; RefChem:5683; lambda6-chromium(6+) ion; DTXCID1011022

Frequently Asked Questions

What are the CAS number and molecular formula of Chrome?

CAS 7440-47-3; molecular formula Cr; molecular weight — g/mol.

What other names is Chrome known by?

CHROMIUM, 7440-47-3, Chrome, Chromium metal, Chrom, Chromium, elemental.

What is the regulatory status of Chrome?

Documented regulatory listings: CIR / INCI: Cosmetics ingredient -> Other (Specify).

Is Chrome classified as hazardous?

50% of GHS notifications report no hazard classification (1202 of 2404).

What are the key physical properties of Chrome?

Boiling Point: 4788 °F at 760 mmHg (NTP, 1992); Boiling Point: 2642; Boiling Point: 4788 ° F; Boiling Point: 2642 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.