Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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4,4'-Methylenebis(N,N-dimethylaniline)(101-61-1)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
4,4'-Methylenebis(N,N-dimethylaniline)
Synonyms
4,4'-Methylenebis(N,N-dimethylaniline)
Michler's base
N,N,N',N'-Tetramethyl-4,4'-methylenedianiline
p,p'-Tetramethyldiamindiphenylmethane
Tetrabase
CAS
101-61-1
Formula
C17H22N2
Molecular Weight
254.38
EINECS
202-959-2
RTECS
BY5250000
RTECS Class
Tumorigen; Mutagen
Merck
12,6264
Beilstein/Gmelin
479956
Beilstein Reference
4-13-00-00390
EC Index Number
612-201-00-6
EC Class
carcinogenic

Physical and Chemical Properties

Appearance
Yellowish glistening leaflets or plates or tan crystals. Weak odor. Sublimes without decomposition.
Solubility in water
Insoluble
Melting Point
85 - 88
Boiling Point
390
Vapor Pressure
3E-6 (25 C)
Density
1.14 g/cm3 (20 C)
pKa/pKb
7.96 (pKb)
Partition Coefficient
4.43
Heat Of Vaporization
63.9 kJ/mol
Usage
Chemical intermediate for dyes: eg, basic yellow 2, basic orange 14, solvent yellow 34, chemical intermediate for its hydrochloride salt, reagent for lead.
Vapor Density
8.77

First Aid Measures

Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation
Causes respiratory tract irritation.
Skin
Causes skin irritation.
Eyes
Causes eye irritation.
Ingestion
Overexposure may cause methemoglobinemia. Causes digestive tract irritation.
Hazards
Contact with metals may evolve flammable hydrogen gas.
EC Risk Phrase
R 45
EC Safety Phrase
S 53 45
UN (DOT)
3259

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Exposure Effects
May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death. Animal inhalation studies have reported the development of tumors. Effects may be delayed. Laboratory experiments have resulted in mutagenic effects.
Exposure limit(s)
OSHA: Possible Select carcinogen
Poison Class
4

Fire Fighting Measures

Flash Point
173
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire Potential
This chemical is combustible.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code
3
Incompatibilities
Acids - acid chlorides - acid anhydrides - oxidizing agents.
Stability
Stable under normal temperatures and pressures.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
3259
Hazard Class
8
Packing Group
I; II; III
HS Code
2921 59 90
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