Functional Roles
Industries Served
Physical Properties
physical_description
4,4'-diaminodiphenylmethane appears as a tan flake or lump solid with a faint fishlike odor. May be toxic by inhalation or ingestion, and may be irritating to skin. Insoluble in water.
color/form
Tan flakes, lumps, or pearly leaflets from benzene
odor
Faint, amine-like odor
boiling_point
BP: 257 u00b0C at 18 mm Hg; 249-253 u00b0C at 15 mm Hg; 232 u00b0C at 9 mm Hg
melting_point
197 to 198 u00b0F (NTP, 1992)
flash_point
428 u00b0F (220 u00b0C) (closed cup)
solubility
Solubility (g/100mL solvent at 25 u00b0C): 273.0 in acetone; 9.0 in benzene; 0.7 in carbon tetrachloride; 9.5 in ethyl ether; 143.0 in methanol; 0.1 in water
density
1.15 at 77 u00b0F (NTP, 1992) - Denser than water; will sink
vapor_density
6.8 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
vapor_pressure
1e-07 mmHg at 77 u00b0F (calculated) (NTP, 1992)
logp
log Kow = 1.59
stability/shelf_life
OXIDIZES IN AIR; PALE YELLOW CRYSTALS TURN DARK COLOR WHEN EXPOSED TO AIR.
decomposition
When heated to decomposition it emits highly toxic fumes of aniline and NOx.
viscosity
8.3 cP at 100 u00b0C
heat_of_vaporization
95.4 kJ/mol
ph
Weak base
ionization_potential
10.70 eV
collision_cross_section
163.3 u00e2u201eu00abu00c2u00b2 [M+H]+ [CCS Type: DT; Buffer gas: N2; Ionization: APCI+; Dataset: TOXCAST; Source Identifier: DTXSID6022422]
other_experimental_properties
Reacts similarly to other aromatic amines. Heat of fusion: 19.6 kJ/mol. Specific heat: 2.1 J/g-deg C
GHS / SDS Safety
Danger
Environmental Hazard
Irritant
Health Hazard
Acute Toxic
- H351: Suspected of causing cancer [Warning Carcinogenicity]
- H350: May cause cancer [Danger Carcinogenicity]
- H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
- H373 (100%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
- H411 (100%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
- H302: Harmful if swallowed [Warning Acute toxicity, oral]
- H370 **: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
- H373 (99.8%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
- H373 **: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
- H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
- H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
- H301 (14.5%): Toxic if swallowed [Danger Acute toxicity, oral]
- H350 (100%): May cause cancer [Danger Carcinogenicity]
- H370 (100%): Causes damage to organs [Danger Specific target organ toxicity, single exposure]
- H311: Toxic in contact with skin [Danger Acute toxicity, dermal]
- H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
- H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
- H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
- H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
- H317 (100%): May cause an allergic skin reaction [Warning Sensitization, Skin]
- H316: Causes mild skin irritation [Warning Skin corrosion/irritation]
- H341 (100%): Suspected of causing genetic defects [Warning Germ cell mutagenicity]
- H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
- H400 (28.5%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H411 (97.1%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
- H341: Suspected of causing genetic defects [Warning Germ cell mutagenicity]
Chemical Identity
| CAS Number | 101-77-9 |
| IUPAC Name | 4-[(4-aminophenyl)methyl]aniline |
| InChI Key | YBRVSVVVWCFQMG-UHFFFAOYSA-N |
| PubChem CID | 7577 |
Synonyms & Trade Names
Full Description
Diaminodiphenylmethane (MDA) is an aromatic diamine compound that serves as a crosslinking and curing agent in industrial formulations. This chemical is primarily utilized in coatings and construction applications where its bifunctional amine structure enables effective polymer crosslinking. With a molecular weight of 198.26 and melting point of 197-198°F, MDA provides reliable curing performance in demanding industrial environments.