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Basic information

  • Name:

  • Chromium trioxide

  • CAS No.:

  • 1333-82-0

  • Formula:
  • CrO3
  • Synonyms:
  • Chromia(CrO3);Chromic anhydride;Chromic trioxide;Chromiumtrioxide;Chromium(VI) oxide;Chromium(VI) trioxide;Monochromium trioxide;Chromiun(Ⅵ)oxide;

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Chemistry

Molecular Structure of Chromium trioxide (CAS NO.10043-01-3):

IUPAC Name: trioxochromium
Molecular formula: CrO3
Molar mass: 99.9943 g/mol
H bond acceptors: 3
H bond donors: 0
Freely Rotating Bonds: 0
Polar Surface Area: 51.21 Å2
Appearance: dark red granular solid
Odor: odorless
Density: 2.70 g/cm3 (20 °C)
Melting point: 197 °C
Boiling Point: 330 °C
Flash Point: 250°C
EINECS: 215-607-8
Water Solubility Highly soluble
Product Categories: Inorganic & organic chemicals; Inorganics
Synonyms: Anidride cromica ; anidridecromica ; anidridecromica ; Chrome bronze ; chrome(trioxydede) ; chrome(trioxydede)(french)[qr] ; chrometrioxydede ; chromia(CrO3)

Uses

 Main application areas for inorganic chromium compounds industrial production. Chromium trioxide used for dyeing and printing industry, paint industry for the production of zinc chrome yellow, Cr2O3 organic industry for the production of low-temperature shift catalyst, the instrument of change agents, oxidation catalyst and high-pressure methanol catalyst. And also for the preservation of timber or waterproofing agent production and high purity such as electrolytic chromium metal.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
human TCLo inhalation 110ug/m3 (0.11mg/m3)   Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 22, Pg. 291, 1980.
mouse LD50 intraperitoneal 14mg/kg (14mg/kg)   Nippon Eiseigaku Zasshi. Japanese Journal of Hygiene. Vol. 34, Pg. 193, 1979.
mouse LD50 intravenous 17100ug/kg (17.1mg/kg)   Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
mouse LD50 oral 127mg/kg (127mg/kg)   Zhonghua Yufangyixue Zazhi. Chinese Journal of Preventive Medicine. Vol. 14, Pg. 86, 1980.
mouse LDLo subcutaneous 20mg/kg (20mg/kg)   Senten Ijo. Congenital Anomalies. Vol. 19, Pg. 171, 1979.
rat LD50 intraperitoneal 58400ug/kg (58.4mg/kg)   Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
rat LD50 intravenous 9260ug/kg (9.26mg/kg)   Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
rat LD50 oral 80mg/kg (80mg/kg) LUNGS, THORAX, OR RESPIRATION: CYANOSIS

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"

SKIN AND APPENDAGES (SKIN): HAIR: OTHER		 Kenkyu Nenpo--Tokyo-toritsu Eisei Kenkyusho. Annual Report of Tokyo Metropolitan Research Laboratory of Public Health. Vol. 27, Pg. 119, 1976.
rat LDLo skin 55mg/kg (55mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: FOOD INTAKE (ANIMAL)

SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE"		 National Technical Information Service. Vol. OTS0537097,

Safety Profile

Hazard Codes: OxidizingO,VeryT+,DangerousN,ToxicT
Risk Statements: 45-46-9-24/25-26-35-42/43-48/23-50/53-62-8
R45:May cause cancer. 
R46:May cause heritable genetic damage. 
R9:Explosive when mixed with combustible material. 
R24:Toxic in contact with skin. 
R25 :Toxic if swallowed. 
R26:Very toxic by inhalation. 
R35:Causes severe burns. 
R42/43:May cause sensitization by inhalation and skin contact. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R8 :Contact with combustible material may cause fire. 
R62:Risk of impaired fertility.
Safety Statements: 53-45-60-61-36/37/39-28-26-22
S53:Avoid exposure - obtain special instructions before use. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S22:Do not breathe dust.
RIDADR: UN 1463 5.1/PG 2
WGK Germany: 3
RTECS: GB6650000
HazardClass: 5.1
PackingGroup: II
HS Code: 28191000

Specification

 Chromium trioxide (CAS NO.10043-01-3) is highly toxic, corrosive and carcinogenic. It is the main example of the environmental hazard known as "hexavalent chromium". The related chromium (III) derivatives are not particularly dangerous, thus reductants are used to destroy chromium(VI) samples. Chromium trioxide, being a powerful oxidizer, will ignite some organic materials (such as ethanol) on contact.

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