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2,4-Dinitrochlorobenzene structure
Chemical Name:
Molecular Formula:
Formula Weight:
MOL File:

2,4-Dinitrochlorobenzene Properties

Melting point:
48-50 °C(lit.)
Boiling point:
315 °C(lit.)
vapor pressure 
1 hPa (106 °C)
refractive index 
Flash point:
367 °F
storage temp. 
Store below +30°C.
alcohol: very slightly soluble (cold)(lit.)
Crystalline Mass, Chunks or Crystals and Powder
Yellow to brown
explosive limit
Water Solubility 
Stable. Combustible. Incompatible with strong oxidizing agents, ammonia. Reacts violently with hydrazine hydrate.
CAS DataBase Reference
97-00-7(CAS DataBase Reference)
NIST Chemistry Reference
Benzene, 1-chloro-2,4-dinitro-(97-00-7)
EPA Substance Registry System
Benzene, 1-chloro-2,4-dinitro-(97-00-7)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H331-H400-H302-H335-H341-H370-H301+H331-H310-H315-H317-H318-H373-H410
Precautionary statements  P201-P202-P260-P262-P264-P270-P271-P272-P301+P312+P330-P302+P352+P310+P361+P364-P304+P340+P312-P305+P351+P338+P310-P307+P311-P391-P403+P233-P405-P501-P261-P273-P280-P301+P310-P302+P350-P305+P351+P338-P280h-P304+P340-P501a
Hazard Codes  T,N
Risk Statements  23/24/25-33-50/53-43-41-38
Safety Statements  28-36/37-45-60-61-28A-24
RIDADR  UN 3441 6.1/PG 2
WGK Germany  2
RTECS  CZ0525000
Autoignition Temperature 464 °C
Hazard Note  Toxic
HSCode  2904 99 00
HazardClass  6.1
PackingGroup  II
Toxicity LD50 orally in Rabbit: 640 mg/kg LD50 dermal Rabbit 130 mg/kg

NFPA 704

Diamond Hazard Value Description
3 4
Health   3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
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   4 Readily capable of detonation or explosive decomposition at normal temperatures and pressures (e.g. nitroglycerin,chlorine dioxide, nitrogen triiodide)

(NFPA, 2010)

2,4-Dinitrochlorobenzene price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 138630 1-Chloro-2,4-dinitrobenzene 97% 97-00-7 5g $26.5 2018-11-13 Buy
Sigma-Aldrich 138630 1-Chloro-2,4-dinitrobenzene 97% 97-00-7 100g $30.3 2018-11-13 Buy
TCI Chemical C0162 1-Chloro-2,4-dinitrobenzene >99.0%(GC) 97-00-7 25g $23 2018-11-22 Buy
TCI Chemical C0162 1-Chloro-2,4-dinitrobenzene >99.0%(GC) 97-00-7 500g $68 2018-11-22 Buy
Alfa Aesar A13774 1-Chloro-2,4-dinitrobenzene, 98% 97-00-7 500g $72.8 2018-11-13 Buy

2,4-Dinitrochlorobenzene Chemical Properties,Uses,Production

Chemical Properties

yellow crystals with an almond odour


1-Chloro-2,4-dinitrobenzene is a benzene derivative and is used in biochemical research as a substrate for glutathione S-transferase.


ChEBI: A C-nitro compound that is chlorobenzene carrying a nitro substituent at each of the 2- and 4-positions.

General Description

Pale yellow needles, almond odor.

Reactivity Profile

Self-reactive, [Halpern, Chem. and Eng. News, 29:2666(1951)]. The mixture of 2,4-Dinitrochlorobenzene with hydrazine hydrate caused a violent reaction.


Toxic by ingestion, inhalation, and skin absorption. Combustible. Upper explosive limit 22%. A skin irritant.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.

Contact allergens

This substance is one of the strongest primary skin irritants known, and a universal contact allergen. Occupational dermatitis has been reported, but current use is decreasing or performed with completely closed systems. DNCB is sometimes used for topical treatment of alopecia areata, severe warts, and cutaneous metastasis of malignant melanoma

Safety Profile

Poison by skin contact and intraperitoneal routes. Moderately toxic by ingestion. A severe human skin and eye irritant. Acts as a primary irritant as well as a sensitizer of skin. An allergen. Mutation data reported. Combustible when exposed to heat or flame. A moderate explosion hazard when exposed to flame, sparks, heated to 1 50°, or when shocked in a sealed container. Explosive reaction with ammonia at 17O℃/40 bar. To fight fire, use CO2, dry chemical. Reacts violently with hydrazine sulfate or hydrazine hydrate. See also NITRO COMPOUNDS of AROMATIC HYDROCARBONS.

Purification Methods

Usually it is recrystallised from EtOH or MeOH. It has also been crystallised from Et2O, *C6H6, *C6H6/pet ether or isopropyl alcohol. A preliminary purification step is to pass its solution in *benzene through an alumina column. It has also been purified by zone refining. It exists in three forms: one stable and two unstable. The stable form crystallises as yellow needles from Et2O, m 51o, b 315o/760mm with some decomposition, and is soluble in EtOH. A labile form also crystallises from Et2O, m 43o, and is more soluble in organic solvents. The second labile form has m 27o. [Hoffman & Dame, J Am Chem Soc 41 1015 1919, Welsh J Am Chem Soc 63 3276 1941, J Chem Soc 2476 1957, Beilstein 5 IV 744.]

2,4-Dinitrochlorobenzene Preparation Products And Raw materials

Raw materials

Preparation Products

2,4-Dinitrochlorobenzene Spectrum

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