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| CAS No.: | 612-82-8 |
|---|---|
| Name: | 3,3'-Dimethylbenzidine dihydrochloride |
| Molecular Structure: | |
|
|
|
| Formula: | C14H18Cl2N2 |
| Molecular Weight: | 285.216 |
| Synonyms: | Benzidine,3,3'-dimethyl-, dihydrochloride (8CI);[1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl-,dihydrochloride (9CI);o-Tolidinedihydrochloride; |
| EINECS: | 210-322-5 |
| Melting Point: | >300°C |
| Boiling Point: | 361 °C at 760 mmHg |
| Flash Point: | 205.1 °C |
| Solubility: | Soluble in water |
| Appearance: | light beige to grey-beige crystalline powder |
| Hazard Symbols: |
 T, N
|
| Risk Codes: | 45-22-51/53-68 |
| Safety: | 53-45-61 |
| Transport Information: | UN 1789/3077 |
| PSA: | 52.04000 |
| LogP: | 5.90120 |
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| Conditions | Yield |
|---|---|
| With formic acid In ethanol; dichloromethane at 20℃; Schiff-base condensation; | 82% |
| Conditions | Yield |
|---|---|
| With formic acid In ethanol; dichloromethane at 20℃; Schiff-base condensation; | 80% |
- 7647-01-0
hydrogenchloride
- 612-82-8
3,3'-dimethylbenzidine diammonium chloride
- 10108-64-2
cadmium(II) chloride
| Conditions | Yield |
|---|---|
| In methanol excess of CdCl2 with 2 drops of concd.HCl in CH3OH added to soln. of ligand in CH3OH, stirred for 0.5 h; filtered, crystd., XRD; | 40% |
- 75-44-5
phosgene
- 612-82-8
3,3'-dimethylbenzidine diammonium chloride
- 91-97-4
4,4'-diisocyanato-3,3'-dimethylbiphenyl
| Conditions | Yield |
|---|---|
| With chlorobenzene |
| Conditions | Yield |
|---|---|
| With ethanol |
- 612-82-8
3,3'-dimethylbenzidine diammonium chloride
- 16083-49-1
N,N'-(3,3'-dimethyl-biphenyl-4,4'-diyl)-bis-carbamic acid dimethyl ester
| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: chlorobenzene View Scheme |
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Chemistry
Molecular Structure of 3,3'-Dimethylbenzidine dihydrochloride (CAS NO.612-82-8):
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IUPAC Name: 4-(4-amino-3-methylphenyl)-2-methylaniline dihydrochloride
Empirical Formula: C14H18Cl2N2
Molecular Weight: 285.2121
H bond acceptors: 2
H bond donors: 4
Freely Rotating Bonds: 3
Polar Surface Area: 0 Å2
EINECS: 210-322-5
Flash Point: 205.1 °C
Boiling Point: 361 °C
Melting Point: >300°C
Sensitive: Air Sensitive
Enthalpy of Vaporization: 60.67 kJ/mol
Vapour Pressure: 2.14E-05 mmHg at 25°C
Product Categories: Intermediates of Dyes and Pigments; Biphenyl & Diphenyl ether
Form: light beige to grey-beige crystalline powder
InChI
InChI=1/C14H16N2.2ClH/c1-9-7-11(3-5-13(9)15)12-4-6-14(16)10(2)8-12;;/h3-8H,15-16H2,1-2H3;2*1H
Smiles
c1(c2cc(c([NH2+])cc2)C)cc(c([NH2+])cc1)C.[ClH-].[ClH-]
Toxicity Data With Reference
| 1. | mma-sat 50 µg/plate | CALEDQ Cancer Letters (Shannon, Ireland). 4 (1977),21. | ||
| 2. | sln-dmg-orl 14 pph | ENMUDM Environmental Mutagenesis. 7 (1985),325. | ||
| 3. | sln-dmg-par 2750 ppm | ENMUDM Environmental Mutagenesis. 7 (1985),325. | ||
| 4. | orl-rat TDLo:1820 mg/kg/65W-C:CAR | JACTDZ Journal of the American College of Toxicology. 10 (2)(1991),255. | ||
| 5. | orl-mus TDLo:15,288 mg/kg/78W-C:CAR | FCTOD7 Food and Chemical Toxicology. 27 (1989),801. | ||
| 6. | orl-rat TDLo:1120 mg/kg/14D-C | NTPTR* National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No. NTP-TR-390 ,1991. | ||
| 7. | orl-rat TDLo:18,200 mg/kg/13W-C | NTPTR* National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No. NTP-TR-390 ,1991. |
Consensus Reports
Reported in NTP Carcinogenesis Studies (Drinking); Clear Evidence: rat NTPTR* National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No. NTP-TR-390 ,1991. . Reported in EPA TSCA Inventory.
Safety Profile
Suspected carcinogen with experimental carcinogenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of HCl and NOx.
Safety information of 3,3'-Dimethylbenzidine dihydrochloride (CAS NO.612-82-8):
Hazard Codes: .gif){kind=small}
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N
Risk Statements:
45: May cause cancer
22: Harmful if swallowed
51/53: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
68: Possible risk of irreversible effects
Safety Statements:
53: Avoid exposure - obtain special instruction before use
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
61: Avoid release to the environment. Refer to special instructions safety data sheet
RIDADR: UN 3077 9/PG 3
WGK Germany: 3
RTECS: DD1226000
F: 3-8-9
HazardClass: 6.1(b)
PackingGroup: III
Specification
3,3'-Dimethylbenzidine dihydrochloride , with CAS number of 612-82-8, can be called [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl-, dihydrochloride ; 3,3'-Dimethyl-4,4'-biphenyldiamine dihydrochloride ; 3,3'-Dimethylbenzidine dihydrochloride . It is a light beige to grey-beige crystalline powder, be soluble in water. The resulting solutions contain moderate to high concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.