4-Nitrophenylhydrazin

4-Nitrophenylhydrazine is a orange-red leaflet or needles wetted with water. It will emit toxic oxides of nitrogen when heated to decomposition. It is slightly heavier than water and insoluble in water. It may be irritating to skin, eyes and mucous membranes. It may be toxic by ingestion. It may be explosive and sensitive to friction in the dry state. It is used as a reagent for ketones and aliphatic aldehydes.

Orange-red solid; [Merck Index] Orange crystalline powder; [Alfa Aesar MSDS]

This chemical does not meet GHS hazard criteria for 2.4% (1 of 41) of reports.

Danger

H228 (95.1%): Flammable solid [Danger Flammable solids]

P210, P240, P241, P261, P264, P264+P265, P270, P271, P272, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P330, P332+P317, P333+P317, P337+P317, P362+P364, P370+P378, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 41 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Not Classified

Chemical: Hydrazine, (4-nitrophenyl)-

(4-Nitrophenyl)hydrazine: Does not have an individual approval but may be used under an appropriate group standard

Excerpt from ERG Guide 113 [Flammable Materials (Wet / Desensitized Explosive)]:

· Flammable/combustible material.

Excerpt from ERG Guide 113 [Flammable Materials (Wet / Desensitized Explosive)]:

· Some are toxic and may be fatal if inhaled, ingested or absorbed through skin. Specifically, Dinitrophenol, wetted (UN1320); Dinitrophenolates, wetted (UN1321), Sodium dinitro-o-cresolate, wetted (UN1348); and Barium azide, wetted (UN1571) are known to be toxic.

4-NITROPHENYLHYDRAZINE is a powerful explosive. It can SELF-IGNITE in the presence of contaminants. Auto-ignition temperature may vary for 4-nitrophenylhydrazine similar to that of hydrazine which has an autoignition of as low as 74oC in contact with iron rust. Dangerous fire hazard or severe explosion can occur when exposed to heat, flame or oxidizing agents. Severe explosion may also occur by chemical reaction with alkali metals; BaO; CaO; K; Na; NH3; Cl2; chromates; CuO; Cu++ salts; F2; H2O2; iron rust; metallic oxides; PbO2;Ni; Ni(ClO4)2; HNO3; N2O; O2; liquid O2; K2Cr2O7; Na2Cr2O7; tetryl; zinc diamide; Zn(C2H5)2. Dangerous; when heated to decomposition it emits highly toxic nitrogen compounds; may explode by heat or chemical reaction. (Sax and Lewis, 1987) under Hydrazine p. 538-539.

4-Nitrophenylhydrazine, with not less than 30 percent water, by mass

UN3376

Div 4.1 Flammable solid (49 eCFR § 173.124)

PG I: the degree of danger presented by the material is great

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Excerpt from ERG Guide 113 [Flammable Materials (Wet / Desensitized Explosive)]:

General First Aid:

Excerpt from ERG Guide 113 [Flammable Materials (Wet / Desensitized Explosive)]:

Immediate precautionary measure