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122-66-7

122-66-7 structural image
Product Name: 1,2-Diphenylhydrazine
Formula: C12H12N2
Synonyms: N,N′-Diphenylhydrazine;N,N′-Bianiline;Hydrazobenzene;NSC 3510
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description 1,2-diphenylhydrazine appears as orange powder or a bright orange crystalline solid. (NTP, 1992)
Color/Form Tablets from alcohol and ether
Boiling Point Decomposes (NTP, 1992)
Melting Point 268 °F (NTP, 1992)
Solubility less than 0.1 mg/mL at 64 °F (NTP, 1992)
Density 1.158 at 61 °F (NTP, 1992) - Denser than water; will sink
Vapor Pressure 0.00044 [mmHg]
LogP log Kow= 2.94
Henry's Law Constant Henry's Law constant = 4.8X10-7 atm-cu m/mol at 25 °C /Estimated/
Stability/Shelf Life Hydrazobenzene (10 ug/L) in dilute aqueous solution was found to be unstable with less than 10% remaining for longer than one day of preservation (in the dark) under any of the conditions tested (ie, room temperature or 4 °C at pH 2,7, or 10 and with or without chlorine).
Decomposition When heated to decomposition it emits toxic fumes of /nitrogen oxides/.
Dissociation Constants pKa = -0.65 /Estimated/
Kovats Retention Index 1609.6 1588 1588 1596
Other Experimental Properties Heat of fusion: 17,645 J/mole
Chemical Classes Nitrogen Compounds -> Hydrazines

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Exclamation Mark
Irritant
GHS07

Health Hazard
GHS08

Environment
GHS09
GHS Hazard Statements H302:Acute toxicity,oral
H350:Carcinogenicity
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P273:Avoid release to the environment.
P308+P313:IF exposed or concerned: Get medical advice/attention.

COMPUTED DESCRIPTORS

Molecular Weight 184.24 g/mol
XLogP3 2.9
Hydrogen Bond Donor Count 2
Hydrogen Bond Acceptor Count 2
Rotatable Bond Count 3
Exact Mass 184.100048391 g/mol
Monoisotopic Mass 184.100048391 g/mol
Topological Polar Surface Area 24.1 Ų
Heavy Atom Count 14
Formal Charge 0
Complexity 128
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

1,2-Diphenylhydrazine is a white solid. There is no information on what it smells like or whether it will burn. It does not dissolve easily in water, but when placed in water, it rapidly breaks down into other chemicals. These include the toxic chemicals benzidine and azobenzene. It does not evaporate easily but may be released to air when attached to dust particles. 1,2-Diphenylhydrazine is a man-made chemical that was used in the past to make benzidine which was used to make various fabric dyes. Benzidine dyes are no longer used in the United States, but may still be used in other countries. The only current use of 1,2-diphenylhydrazine in the United States is in the production of medicines to treat inflammation and a type of arthritis.

RELATED SUPPLIERS

Suchem Laboratories

1Y
product:122-66-7 N,N'-Diphenylhydrazine 98%

S D Fine Chem Limited

1Y
product:N,N'-Diphenylhydrazine 122-66-7 99%
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