Name | m-Phenylenediamine |
Synonyms | mPDA benzenediamine diaminobenzene meta-aminoaniline C.I. Developer 11 1,3-Diaminobenzene 1,3-Benzenediamine m-Phenylenediamine benzene-1,3-diamine 1,3-Diamino benzene m-Phenylene Diamine 1,3-Phenylenediamine Metaphenylene Diamine Meta Phenylenediamine Meta-Phenylenediamine 1,3-Benzenediamine(9CI) meta-Phenylenediamine (MPD) META PHENYLENE DIAMINE - FLAKE |
CAS | 108-45-2 |
EINECS | 203-584-7 |
InChI | InChI=1/C6H8N2/c7-5-2-1-3-6(8)4-5/h1-4H,7-8H2 |
InChIKey | WZCQRUWWHSTZEM-UHFFFAOYSA-N |
Molecular Formula | C6H8N2 |
Molar Mass | 108.14 |
Density | 1,139 g/cm3 |
Melting Point | 64-66 °C |
Boling Point | 282-284 °C |
Flash Point | >230°F |
Water Solubility | 350 g/L (25 ºC) |
Solubility | 350g/l |
Vapor Presure | 0.62 mm Hg ( 100 °C) |
Vapor Density | 3.7 (vs air) |
Appearance | pellets |
Color | Yellow to light tan or brown gray |
Exposure Limit | ACGIH: TWA 0.1 mg/m3 |
Merck | 14,7283 |
BRN | 471357 |
pKa | 5.11, 2.50(at 20℃) |
PH | 8 (100g/l, H2O, 20℃) |
Storage Condition | Store below +30°C. |
Sensitive | Air Sensitive |
Refractive Index | 1.6339 |
Physical and Chemical Properties | Appearance: colorless needle-like crystals, unstable in the air, easy to become light red Melting Point: 63-65 Boiling Point: 282-284 flash point: 175 specific gravity (25°C) 1.0696 refractive index: 1.6339 water-soluble: soluble in water (350g/L at 25), soluble in ethanol, water, chloroform, acetone, dimethylformamide, slightly soluble in ether, carbon tetrachloride, insoluble in benzene, toluene, butanol |
Use | Intermediates of azo dyes and azine dyes, mainly used in the manufacture of direct tanning RN, basic Orange, basic Brown G, direct tanning G and other dyes, and used as fur dyes in Japan, the consumption of azo dyes accounted for 90% of the total consumption of M-phenylenediamine. It is also used as a curing agent for epoxy resin, a coagulant for cement, and for dyeing water, mordant, chromogenic agent, etc. |
Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R36 - Irritating to the eyes R43 - May cause sensitization by skin contact R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R68 - Possible risk of irreversible effects R40 - Limited evidence of a carcinogenic effect |
Safety Description | S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S28A - |
UN IDs | UN 1673 6.1/PG 3 |
WGK Germany | 2 |
RTECS | SS7700000 |
FLUKA BRAND F CODES | 8-10-23 |
TSCA | Yes |
HS Code | 29215119 |
Hazard Class | 6.1 |
Packing Group | III |
Toxicity | LD50 in rats (mg/kg): 650 orally; 283 i.p. (Burnett) |
Downstream Products | 1,3-Difluorobenzene |
colorless needle-like crystals. Unstable in air, usually in the form of a stable hydrochloride. The relative density was 1.0696. The melting point of 63~64 deg C, boiling point of 282~284 deg C. Refractive index 6339. Soluble in water, ether and ethanol.
nitrobenzene is nitrated into a mixture of M-, o-and p-dinitrobenzene by mixed acid, refined by sodium sulfite and liquid alkali to obtain m-dinitrobenzene, and then reduced by iron powder to obtain m-phenylenediamine.
azo dyes and azine dye intermediates, mainly used in the manufacture of direct tanning RN, and used as fur dyes. It is also used as a curing agent for epoxy resin and an accelerator for cement.