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2,4-DINITROPHENOL
ICSC: 0464
Peer-Review Status: 25.03.1996 Validated
1-Hydroxy-2,4-dinitrobenzene 
CAS #: 51-28-5 RTECS #: SL2800000
UN #: 1320 (wetted with no less than 15% water)
EC #: 609-041-00-4
EINECS #: 200-087-7
    Formula: C6H4N2O5 / C6H3(OH)(NO2)2
Molecular mass: 184.11

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water in large amounts. 
EXPLOSION Risk of fire and explosion.  Do NOT expose to friction or shock.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation See Ingestion.  Use local exhaust or breathing protection.  Fresh air, rest. See Notes. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Roughness. Yellow staining of the skin. Further see Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes   Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Nausea. Vomiting. Palpitations. Shock or collapse. Sweating.  Do not eat, drink, or smoke during work.  Rest. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Do not allow to dry out. Personal protection: complete protective clothing including self-contained breathing apparatus. Sweep spilled substance into covered containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
Marine pollutant. 
EC Classification
Symbol: T, N; R: 23/24/25-33-50; S: (1/2)-28-37-45-61; Note: C 
UN Classification
UN Hazard Class: 4.1; UN Subsidiary Risks: 6.1; UN Pack Group: I 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-41GDT-I.  Fireproof. Separated from combustible substances, reducing agents and food and feedstuffs. Cool. 

IMPORTANT DATA
Physical State; Appearance
YELLOW CRYSTALS. (SEE NOTES). 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
May decompose explosively on shock, friction or concussion. May explode on heating. Mixtures with alkalis, ammonia and most metals are shock-sensitive. Decomposes on heating. This produces toxic gases including nitrogen oxides. See Notes. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. 

Effects of short-term exposure
The substance may cause effects on the metabolism. This may result in very high body temperature. Exposure could cause death. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the peripheral nervous system. The substance may have effects on the eyes. This may result in cataract. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Sublimation
Melting point: 112°C
Relative density (water = 1): 1.68
Solubility in water, g/100ml at 54.5°C: 0.14
Relative vapour density (air = 1): 6.36  
This substance may be hazardous to the environment. Special attention should be given to aquatic organisms. 

NOTES
Use all available methods for reducing body temperature.
Because of its explosive properties, the compound is used in the form of a water paste.
UN 0076 applies to the dry compound.
CAS 25550-58-7 applies to unspecified isomers of dinitrophenol.
Card has been partly updated in October 2005.
See sections Occupational Exposure Limits, EU classification, Emergency Response. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations