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Diphenylamine structure
Chemical Name:
DFA;DPA;Z-876;OA-505;CORAZA;ci10355;Scaldip;NO SCALD;bigdipper;c.i.10355
Molecular Formula:
Formula Weight:
MOL File:

Diphenylamine Properties

Melting point:
52 °C
Boiling point:
302 °C(lit.)
vapor density 
5.82 (vs air)
vapor pressure 
1 mm Hg ( 108 °C)
refractive index 
1.5785 (estimate)
Flash point:
307 °F
storage temp. 
alcohol: passes test
0.79(at 25℃)
Water Solubility 
Slightly soluble. 0.03 g/100 mL
Air & Light Sensitive
Exposure limits
TLV-TWA 10 mg/m3 (ACGIH and MSHA).
Stable; may discolour on exposure to light. Incompatible with strong acids, strong oxidizing agents.
CAS DataBase Reference
122-39-4(CAS DataBase Reference)
NIST Chemistry Reference
EPA Substance Registry System
Benzenamine, N-phenyl-(122-39-4)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  T,N,F
Risk Statements  23/24/25-33-50/53-52/53-39/23/24/25-11-51/53
Safety Statements  28-36/37-45-60-61-28A-16-7
RIDADR  UN 3077 9/PG 3
WGK Germany  3
RTECS  JJ7800000
Autoignition Temperature 630 °C DIN 51794
HS Code  2921 44 00
HazardClass  6.1
PackingGroup  III
Hazardous Substances Data 122-39-4(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 1120 mg/kg LD50 dermal Rabbit > 5000 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P309 IF exposed or if you feel unwell:
P310 Immediately call a POISON CENTER or doctor/physician.
P311 Call a POISON CENTER or doctor/physician.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
Flammability   1 Materials that require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur. Includes some finely divided suspended solids that do not require heating before ignition can occur. Flash point at or above 93.3 °C (200 °F). (e.g. mineral oil, ammonia)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

Diphenylamine price More Price(18)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 112763 Diphenylamine 99% 122-39-4 100g $67.1 2018-11-20 Buy
Sigma-Aldrich 112763 Diphenylamine 99% 122-39-4 1kg $135 2018-11-20 Buy
Alfa Aesar 036610 Diphenylamine, ACS 122-39-4 25g $20.5 2018-11-16 Buy
Alfa Aesar 036610 Diphenylamine, ACS 122-39-4 100g $52.1 2018-11-16 Buy
Cayman Chemical 24250 Diphenylamine ≥98% 122-39-4 1g $35 2018-11-19 Buy

Diphenylamine Chemical Properties,Uses,Production

Chemical Properties

white crystals or powder

Chemical Properties

Diphenylamine is a colorless monoclinic leafl et substance. It is used in the manufacture of a variety of substances, i.e., dyestuffs and their intermediates, pesticides, antihelmintic drugs, and as reagents in analytical chemistry laboratories.


Diphenylamine is an aromatic amine that was shown to exhibit antioxidant activities and is now used as an anti-scald agent. It is also used in the manufacture of a variety of substances, for instance, dye stuffs and their intermediates, pesticides, anthelmintic drugs, and as reagents in analytical chemistry laboratories.


Diphenylamine is used in the manufactureof dyes, as a stabilizer for nitrocelluloseexplosives, and as an analytical reagent forcolorimetric tests for nitrate and chlorate.
Other applications of this compoundinclude preventing postharvest deteriorationof apple and peer crops; as an antioxidant inrubber and elastomer industry and in the per fumery. As a stabilizer for propellants andexplosives, it binds their degradation prod ucts thus prolonging the storage time of suchpropellants.


ChEBI: An aromatic amine containing two phenyl substituents. It has been used as a fungicide for the treatment of superficial scald in apples and pears, but is no longer approved for this purpose within the European Union.


diphenylamine: A colourless crystallinearomatic compound,(C6H5)2NH; m.p. 54°C. It is made byheating phenylamine (aniline) withphenylamine hydrochloride. It is asecondary amine and is both slightlyacidic (forming an N-potassium salt)and slightly basic (forming salts withmineral acids). Its derivatives are employedas stabilizers for syntheticrubber and rocket fuels.

General Description

Light tan to brown solid with a pleasant odor. Sinks in water.

Air & Water Reactions

Dust may be explosive if mixed with air in critical proportions and in the presence of a source of ignition [USCG, 1999]. Insoluble in water.

Reactivity Profile

Diphenylamine discolors in light. Diphenylamine can react violently with hexachloromelamine and trichloromelamine. Diphenylamine is incompatible with strong oxidizing agents and strong acids. Diphenylamine is also incompatible with iron and silver salts. Diphenylamine reacts with nitrogen oxides.

Health Hazard

Inhalation may irritate mucous membranes. Overexposure, including ingestion of solid or skin contact, may cause fast pulse, hypertension, and bladder trouble. Contact with dust irritates eyes.

Health Hazard

Diphenylamine is much less toxic than aniline. The acute oral toxicity is low. A doseof 3000 mg/kg was lethal to rats. At a concentration of >500 ppm, a diet fed to ratsfor over 7 months resulted in renal cysts inanimals. Its absorption through the skin andthe respiratory system is lower than that ofaniline. Exposure to its dusts caused changesin liver, spleen, and kidney in test animals.Industrial exposure to diphenylamine hascaused tachycardia, hypertension, eczema,and bladder symptoms in workers (Fairhall1957). Carcinogenicity of this compound isunknown. It showed an adverse reproduc tive effect in animals, causing developmentalabnormalities in urogenital system in pregnant rats.
LD50 value, oral guinea pig: 300 mg/kg.

Health Hazard

Diphenylamine is highly toxic and is rapidly absorbed by the skin and through inhalation. It has caused anorexia, hypertension, eczema, and bladder symptoms. Experimental animals exposed to diphenylamine demonstrated cystic lesions but failed to demonstrate cancerous growth. Inhalation of diphenylamine dust may cause systemic poisoning. The symptoms of toxicity include, but are not limited to, anoxia, headache, fatigue, anorexia, cyanosis, vomiting, diarrhea, emaciation, hypothermia, bladder irritation, kidney, heart, and liver damage.

Fire Hazard

Noncombustible solid; autoignition temperature 634°C (1173°F); low reactivity.

Agricultural Uses

Insecticide, Fungicide, Herbicide, Plant growth regulator: Topically in anti-screwworm mixtures, foliar application in a modified growth chamber to decrease ozone injury to leaves of apple, bean, muskmelon, petunia, and tobacco plants. To control weather fleck in tobacco and inhibit algae formation. To prolong the fresh appearance of snapdragons. Protect rice from the toxic effects of thiolcarbamate herbicides [83] . Not currently approved for use in EU countries (resubmitted) . Registered for use in the U.S. and other countries.

Trade name


Safety Profile

Poison by ingestion. Experimental teratogenic effects. Action similar to anhne but less severe. Combustible when exposed to heat or flame. Can react violently with hexachloromelamine or trichloromelamine. Can react with oxilzing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits highly toxic fumes of NOx,. See also ANILINE, AMINES, and AROMATIC AMINES.

Metabolic pathway

The major metabolite of diphenylamine (DPA) identified in stored apples is a glucose conjugate of 4-hydroxydiphenylamine, and additional metabolites, characterized as glycosyl conjugates of 2-hydroxy- DPA, 3-hydroxy-DPA, 4-hydroxy-DPA, or dihydroxy- DPA, are also detected along with their intact (i.e. non-conjugated) forms in apple pulp.


Diphenylamine should be protected from physical damage. Storage of diphenylamine outside or a detached area is preferred. Inside storage should be in a standard flammable liquids storage room or cabinet. Diphenylamine should be kept separately from oxidizing materials and incompatible chemical substances. Storage and work areas should be no smoking areas. Diphenylamine should be kept protected from light.

Purification Methods

Crystallise diphenylamine from pet ether, MeOH, or EtOH/water. Dry it under vacuum. [Beilstein 12 H 174, 12 IV 271.]


Students and occupational workers should be careful during use and handling of diphenylamine. Workers should wear impervious protective clothing, including boots, gloves, a laboratory coat, apron or coveralls, as appropriate, to prevent skin contact. Finely dispersed particles of diphenylamine form explosive mixtures in air. Diphenylamine is very harmful on exposures by swallowing, inhalation, and/or skin absorption. Diphenylamine causes irritation to the skin, eyes, and respiratory tract, and causes blood vascular changes leading to methemoglobinemia.

Diphenylamine Preparation Products And Raw materials

Raw materials

Preparation Products

Diphenylamine Suppliers

Global( 280)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22064 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20743 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32606 55
Nanjing ChemLin Chemical Industry Co., Ltd.
025-83697070; CHINA 3015 60
Qingdao Hongjin Trading Co., Ltd.
0532-83657313 CHINA 225 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24093 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20177 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 4696 58
career henan chemical co
+86-371-86658258 CHINA 19975 58
Lianyungang Xuanyuan Chemical Co., Ltd +86-0518-85415818 18000194506
+86-0518-85415818 China 318 55

View Lastest Price from Diphenylamine manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-04-03 Diphenylamine in stock Factory
US $1.00 / KG 1KG TOP 3 Factory in China Top 3 largest production capacity Factory Chemwill Asia Co.,Ltd.
2018-12-24 Diphenylamine
US $1.00 / KG 1KG 95%-99% 1000kg career henan chemical co

Diphenylamine Spectrum

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