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Chemical Datasheet
2,4-DINITROPHENOL |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
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NIOSH Pocket Guide |
International Chem Safety Card |
none
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NFPA 704
data unavailable
General Description
Solid yellow crystals. Explosive when dry or with less than 15% water. The primary hazard is from blast of an instantaneous explosion and not flying projectiles and fragments. slightly soluble in water and soluble in ether and solutions of sodium or potassium hydroxide.
Hazards
Reactivity Alerts
- Highly Flammable
- Explosive
- Strong Oxidizing Agent
Air & Water Reactions
Highly flammable. Slightly soluble in water.
Fire Hazard
Combustible. May explode if subjected to heat or flame. POISONOUS GAS IS PRODUCED WHEN HEATED. Vapors are toxic. Can detonate or explode when heated under confinement. (USCG, 1999)
Health Hazard
DUST: POISONOUS IF INHALED OR IF SKIN IS EXPOSED. SOLID: POISONOUS IF SWALLOWED. (USCG, 1999)
Reactivity Profile
2,4-DINITROPHENOL may explode if subjected to heat or flame. May explode if allowed to dry out. Forms explosive salts with alkalis and ammonia. Incompatible with heavy metals and their compounds. Also incompatible with strong oxidizing agents, strong bases and reducing agents. Reacts with combustibles. (NTP, 1992)
Belongs to the Following Reactive Group(s)
- Nitro, Nitroso, Nitrate, and Nitrite Compounds, Organic
- Phenols and Cresols
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Expanded Polymeric Absorbents
Response Recommendations
Isolation and Evacuation
Excerpt from 113
[Flammable Materials (Wet / Desensitized Explosive)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area immediately for at least 100 meters (330 feet) in all directions.
LARGE SPILL: Consider initial evacuation for 500 meters (1/3 mile) in all directions.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from 113
[Flammable Materials (Wet / Desensitized Explosive)]:
CARGO FIRE: DO NOT fight fire when fire reaches cargo! Cargo may EXPLODE! Stop all traffic and clear the area for at least 1600 meters (1 mile) in all directions and let burn. Do not move cargo or vehicle if cargo has been exposed to heat.
TIRE OR VEHICLE FIRE: Use plenty of water - FLOOD it! If water is not available, use CO2, dry chemical or dirt. If possible, and WITHOUT RISK, use unmanned master stream devices or monitor nozzles from maximum distance to prevent fire from spreading to cargo area. Pay special attention to tire fires as re-ignition may occur. Stand by, at a safe distance, with extinguisher ready for possible re-ignition. (ERG, 2020)
Non-Fire Response
Excerpt from 113
[Flammable Materials (Wet / Desensitized Explosive)]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material.
SMALL SPILL: Flush area with large amounts of water.
LARGE SPILL: Wet down with water and dike for later disposal. KEEP "WETTED" PRODUCT WET BY SLOWLY ADDING FLOODING QUANTITIES OF WATER. (ERG, 2020)
Protective Clothing
Wear goggles, self-contained breathing apparatus, and rubber overclothing (including gloves). (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: DO NOT INDUCE VOMITING. Phenols are very toxic poisons AND corrosive and irritating, so that inducing vomiting may make medical problems worse. IMMEDIATELY call a hospital or poison control center and locate activated charcoal, egg whites, or milk in case the medical advisor recommends administering one of them. If advice from a physician is not readily available and the victim is conscious and not convulsing, give the victim a glass of activated charcoal slurry in water or, if this is not available, a glass of milk, or beaten egg whites and IMMEDIATELY transport victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, assure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
234 to 237°F
(NTP, 1992)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air):
6.35
(NTP, 1992)
- Heavier than air; will sink
Specific Gravity:
1.68
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point:
Sublimes (when carefully heated)
(NTP, 1992)
Molecular Weight:
184.11
(NTP, 1992)
Water Solubility:
less than 1 mg/mL
at 67.1°F
(NTP, 1992)
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
Dinitrophenol, 2,4- (51-28-5)
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0.61 mg/m3 |
6.8 mg/m3 |
16 mg/m3 |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
Regulatory Name |
CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ |
EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
2,4-Dinitrophenol |
51-28-5 |
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10 pounds |
313 |
P048 |
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(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- ALDIFEN
- ALPHA-DINITROPHENOL
- CHEMOX PE
- DINITROPHENOL
- 2,4-DINITROPHENOL
- DINOFAN
- DNP
- 2,4-DNP
- FENOXYL
- FENOXYL CARBON N
- 1-HYDROXY-2,4-DINITRO-BENZENE
- 1-HYDROXY-2,4-DINITROBENZENE
- MAROXOL-50
- NITRO KLEENUP
- NITROPHEN
- NITROPHENE
- NSC 1532
- PHENOL, 2,4-DINITRO-
- PHENOL, ALPHA-DINITRO-
- SOLFO BLACK 2B SUPRA
- SOLFO BLACK B
- SOLFO BLACK BB
- SOLFO BLACK G
- SOLFO BLACK SB
- TERTROSULPHUR BLACK PB
- TERTROSULPHUR PBR