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CAS No. 108-45-2
Content 98%
Packing 25kg/bag
| 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 |
| LogP | -0.39 at 20℃ |
| (IARC) carcinogen classification | 3 (Vol. 16, Sup 7) 1987 |
| application | mainly used as dye intermediate and epoxy resin curing agent azo dye and azazine dye intermediate, mainly used to manufacture direct sun-resistant RN, basic orange, basic brown G, direct sun-resistant G and other dyes, and used as fur dye. in Japan, isophenylenediamine consumed by azo dye accounts for 90% of the total consumption. It is also used as a curing agent for epoxy resin, a coagulant for cement, and for dyeing water, mordant, developer, etc. used as analytical reagent, resin curing agent and polymerization inhibitor, also used in the synthesis of dyes spectrophotometric determination of nitrite, bromate, bromide, chromate, ozone, gold, copper, dichromate, iron, oxygen and platinum, determination of active chlorine, chromium, iridium, nitrite and palladium. |
| Production method | Nitrobenzene is nitrated with mixed acid into a mixture of m-, o-and p-dinitrobenzene, and then refined with sodium sulfite and liquid alkali to obtain m-dinitrobenzene, and then reduced or hydrogenated with iron powder to obtain m-phenylenediamine. Raw material consumption quota: nitrobenzene 1400kg/t, nitric acid 787kg/t, sulfuric acid (98%)780kg/t, iron powder 3083kg/t. |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 280 mg/kg; Oral-mouse LD50: 67.7 mg/kg |
| flammability hazard characteristics | open flame is combustible; heating emits toxic aniline gas |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | mist water, carbon dioxide, sand |
| occupational standard | TWA 0.1 mg/m3 |
| spontaneous combustion temperature | 560°C |
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