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Name	3,3'-Dichlorobenzidine dihydrochloride	EINECS	210-323-0
CAS No.	612-83-9	Density	N/A
PSA	52.04000	LogP	6.59120
Solubility	<0.1 g/100 mL at 21.5 °C in water	Melting Point	132~137 °C
Formula	C₁₂H₁₂Cl₄N₂	Boiling Point	385 °C at 760 mmHg
Molecular Weight	326.05	Flash Point	186.6 °C
Transport Information	UN 3077 9/PG 3	Appearance	beige to tan powder
Safety	53-45-60-61	Risk Codes	45-21-43-50/53
Molecular Structure		Hazard Symbols	T, N
Synonyms	Benzidine,3,3'-dichloro-, dihydrochloride (8CI);[1,1'-Biphenyl]-4,4'-diamine, 3,3'-dichloro-,dihydrochloride (9CI);3,3'-Dichloro-4,4'-diaminobiphenyl dihydrochloride;3,3'-Dichloro[1,1'-biphenyl]-4,4'-diamine dihydrochloride;Dichlodine H;

3,3'-Dichlorobenzidine dihydrochloride Chemical Properties

MF: C₁₂H₁₂Cl₄N₂

The Synonyms of 3,3'-Dichlorobenzidine dihydrochloride（612-83-9） is 1-biphenyl)-4,4-diamine,3,3-dichloro-(dihydrochloride;1-biphenyl]-4,4-diamine,3,3-dichloro-[dihydrochloride;3,3-dichloro-denzidindihydrochloride;3,3'-DICHLORO-4,4'-BIPHENYLDIAMINE DIHYDROCHLORIDE;
MW: 326.05
EINECS: 210-323-0
Product Categories: Intermediates of Dyes and Pigments;Organics;Biphenyl &Diphenyl ether;Aryl Amines MAK III, Category 2Chemical Class;DIA - DICMore...Close...;Alpha Sort;Amines;Analytical Standards;AromaticsChemical Class;AromaticsMethod Specific;Chemical Class;ChloroVolatiles/ mivolatiles;D;DAlphabetic;Halogenated;OekoTex Standard100;CancerResearch;Carcinogens
Mol File: 612-83-9.mol
mp：132~137℃
Water Solubility ：<0.1 g/100 mL at 21.5 oC
Stability: Stable; but may be air or light sensitive. Incompatible with strong oxidizing agents.
CAS DataBase ：Reference 612-83-9(CAS DataBase Reference)
EPA Substance：Registry System 612-83-9(EPA Substance)
Surface Tension: dyne/cm
Density: 1.21g/cm³
Flash Point: 186.6 °C
Enthalpy of Vaporization: 63.37 kJ/mol
Boiling Point: 385 °C at 760 mmHg

3,3'-Dichlorobenzidine dihydrochloride Uses

The 3,3'-Dichlorobenzidine dihydrochloride（612-83-9）is used as Production of dyes, pigments and ink，analytical reagents and dye intermediates

3,3'-Dichlorobenzidine dihydrochloride Toxicity Data With Reference

1.	mmo-sat 10 µg/plate	ENMUDM Environmental Mutagenesis. 5 (Suppl 1)(1983),3.
2.	mma-sat 1 µg/plate	ENMUDM Environmental Mutagenesis. 5 (Suppl 1)(1983),3.
3.	orl-rat LD50:3820 mg/kg	34ZIAG Toxicology of Drugs and Chemicals ,Deichmann, W.B.,New York, NY.: Academic Press, Inc.,1969,211.

Hazard Codes：T,N

Risk Statements：45-21-43-50/53
R45：May cause cancer；
R21:Harmful in contact with skin ;
R43:May cause sensitization by skin contact ;
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment ;
RTECS：DD0550000
Hazardous Substances Data：612-83-9(Hazardous Substances Data)

3,3'-Dichlorobenzidine dihydrochloride Consensus Reports

NTP 10th Report on Carcinogens. Reported in EPA TSCA Inventory.

3,3'-Dichlorobenzidine dihydrochloride Safety Profile

Confirmed carcinogen. Moderately toxic by ingestion. Mutation data reported. When heated to decomposition it emits very toxic fumes of Cl⁻ and NO_x.

Safety Statements of 3,3'-Dichlorobenzidine dihydrochloride(612-83-9)：53-45-60-61
S53:Avoid exposure - obtain special instruction before use ;
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) ;
S60:This material and/or its container must be disposed of as hazardous waste ;
S61:Avoid release to the environment. Refer to special instructions safety data sheet ;
RIDADR：UN 3077 9/PG 3
WGK Germany：3

3,3'-Dichlorobenzidine dihydrochloride Standards and Recommendations

OSHA PEL: Cancer Suspect Agent

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