Paint chemicals

CAS No. 108-45-2

Content 98%

Packing 25kg/bag

Names and Identifiers

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

108-45-2 – Physico-chemical Properties

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.

108-45-2 – Risk and Safety

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)

108-45-2 – Upstream Downstream Industry

Downstream Products

1,3-Difluorobenzene

Reference Information

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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