p-Phenylenediamine manufacturers and suppliers

p-Phenylenediamine suppliers

Properties

Melting point:: 138-143 °C (lit.)

Boiling point:: 267 °C (lit.)

Density: 1.135 g/cm3 (20℃)

vapor density: 3.7 (vs air)

vapor pressure: 1.08 mm Hg ( 100 °C)

refractive index: 1.6339 (estimate)

Flash point:: 156 °C

storage temp.: Store below +30°C.

solubility: Soluble in alcohol, chloroform, ether and hot benzene.

Colour Index: 76060

form: Powder or Flakes

pka: 4.17(at 25℃)

color: White, gray, or purple to brown

PH: 9 (50g/l, H2O, 20℃)

PH Range: NonQ uorescence (3.1) to orange/yellow Q uorescence (4.4)

Water Solubility: 47 g/L (25 ºC)

Merck: 14,7285

BRN: 742029

Exposure limits: TLV-TWA 0.1 mg/m³ (ACGIH 1989); TWA skin 0.1 mg/m³ (MSHA and OSHA); IDLH 25 mg/m³ (NIOSH); carcinogenicity: Animal Inadequate Evidence (IARC). .

Stability:: Stable, but oxidizes when exposed to air. Incompatible with oxidizing agents. Store under inert atmosphere.

Major Application: Nanoparticles, liquid crystal displays, chemical mechanical polishing, bottom antireflective coatings, electrochromic materials, inks, rubber, hair dyes, cosmetics, treatment of virus skin infection

InChIKey: CBCKQZAAMUWICA-UHFFFAOYSA-N

LogP: -0.84 at 20℃

Safety Information

Symbol(GHS): GHS06,GHS08,GHS09

Signal word: Danger

Hazard statements: H301+H311+H331-H317-H319-H370-H410

Precautionary statements: P273-P280-P301+P310-P302+P352+P312-P304+P340+P311-P305+P351+P338

Hazard Codes: T,N,T+,Xn

Risk Statements: 23/24/25-36-43-50/53-63-36/37/38-45-40-48/22-67-52/53

Safety Statements: 28-36/37-45-60-61-28A-24/25-23-53-26

RIDADR: UN 1673 6.1/PG 3

WGK Germany: 3

RTECS: SS8050000

F: 8-10-23

Autoignition Temperature: 567 °C

TSCA: Yes

HazardClass: 6.1

PackingGroup: III

HS Code: 29215119

Toxicity: LD50 in rats (mg/kg): 80 orally, 37 i.p. (Burnett)

IDLA: 25 mg/m3

Use

p-phenylenediamine is one of the simplest aromatic diamine with the pure product being white to purple red crystals.it can be used for making azo dyes, high-molecule polymers and can also be used for the production of fur dyes, rubber antioxidants and photo developer and is mainly used for kevlar, azo dyes, sulfur dyes, acid dyes as well as being used for the production of black fur d, black fur db, brown fur n2 as well as rubber antioxidant dnp, dop and mb. it can also be used as the raw material of cosmetic hair p-phenylenediamine series, gasoline polymerization inhibitor and developer. p-phenylenediamine, as a chemical dye, is currently permitted for use in hair dye production, but there is a clear usage limits. according to china "hygienic standard for cosmetics," the content of p-phenylenediamine in hair dyes should not exceed 6%. according to the introduction of experts, although five kinds of "yixihei" shampoo have their p-phenylenediamine content being within 1.1% to 1.4%. however, the shampoo has high frequency of usage with long-term accumulation being prone to pose a threat to the health and safety of consumers. there is still no literatures regarding to whether phenylenediamine is carcinogenic or not; but there is literature basis regarding to that p-phenylenediamine drug is toxic organic. we can refer to shanghai science and technology press (november 1985) "reagent handbook" (second edition), page 980. overseas research has shown that for population being subject to frequent hair dying has the incidence of breast cancer, skin cancer and leukemia increased. in addition, p-phenylenediamine is also a common sensitive reagent for testing iron and copper. in the international arena, it is also used for aircraft coatings, bullet-proof clothing intima and walls paint.

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