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1271-54-1

Basic Information
CAS No.: 1271-54-1
Name: DIBENZENECHROMIUM
Article Data: 66
Molecular Structure:
Molecular Structure of 1271-54-1 (DIBENZENECHROMIUM)
Formula: C12H12 Cr
Molecular Weight: 208.223
Synonyms: Chromium,bis(benzene)- (6CI,8CI); Bis(benzene)chromium; Bis(benzene)chromium(0); Bis(h6-benzene)chromium; Di(h6-benzene)chromium;Dibenzenechromium; p-Bis(benzene)chromium(0)
EINECS: 215-042-7
Density: g/cm3
Melting Point: 284-285 °C
Boiling Point: 78.8 °C at 760 mmHg
Flash Point: 180 °F
Solubility: insoluble in water
Appearance: brown to black xtl.
Hazard Symbols: FlammableF
Risk Codes: 11
Safety: Poison by intravenous route. When heated to decomposition it emits toxic fumes of Cr.
Transport Information: UN# 1325
PSA: 0.00000
LogP: 3.37320
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Chemistry

IUPAC Name: benzene; chromium; cyclohexane 
Molecular Formula C12H12Cr
Molecular Weight: 208.21978 [g/mol]
H-Bond Donor: 0
H-Bond Acceptor: 6
Rotatable Bond Count: 0
Exact Mass: 208.034412
MonoIsotopic Mass: 208.034412
Topological Polar Surface Area: 0
Heavy Atom Count: 13
Formal Charge: -6
Complexity: 97.3
Canonical SMILES: [CH-]1[CH-][CH-][CH-][CH-][CH-]1.C1=CC=CC=C1.[Cr]
InChI: InChI=1S/2C6H6.Cr/c2*1-2-4-6-5-3-1;/h2*1-6H;/q;-6;
InChIKey: IWCQVOVBDXJJDF-UHFFFAOYSA-N
Structure of Bis(benzene)chromium (CAS NO.1271-54-1):

Toxicity Data With Reference

1.    

ivn-mus LD50:17,800 µg/kg

    CSLNX*    U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#02380 .

Safety Profile

Hazard Codes: FlammableF
Risk Statements: 11 
R11:Highly flammable.
Safety Statements: 16-33 
S16:Keep away from sources of ignition. 
S33:Take precautionary measures against static discharges.
RIDADR UN: 1325 4.1/PG 2
WGK Germany: 3
RTECS: GB5850000
HazardClass: 4.2
PackingGroup: I
Poison by intravenous route. When heated to decomposition it emits toxic fumes of Cr.

Standards and Recommendations

OSHA PEL: TWA 0.5 mg(Cr)/m3
ACGIH TLV: TWA 0.5 mg(Cr)/m3; Not Classifiable as a Carcinogen

Specification

  Bis(benzene)chromium , its cas register number is 1271-54-1. It also can be called Bis(eta(sup 6)-benzene)chromium ; Dibenzenechromium ; Diphenylchromium ; EINECS 215-042-7; Chromium(II), diphenyl- ; Chromium, bis(benzene)- (8CI) ; Chromium, bis(eta(sup 6)-benzene)- (9CI) . Bis(benzene)chromium (CAS NO.1271-54-1) is highly flammable. So keep away from sources of ignition and take precautionary measures against static discharges.