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Chemical Datasheet

2,6-DINITROPHENOL

 4.1 - Flammable solid 6.1 - Poison

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 573-56-8
  • 1320
  • Flammable Solid
  • Poison
  • DNH
NIOSH Pocket Guide International Chem Safety Card
none none
NFPA 704
data unavailable
General Description
Yellow crystalline solid with a sweet musty odor. Sinks and mixes slowly with water. (USCG, 1999)

Hazards

Reactivity Alerts
Air & Water Reactions
Mixes slowly with water.
Fire Hazard
Special Hazards of Combustion Products: Dissociation into irritating nitrogen oxides.

Behavior in Fire: Can explode when heated under confinement. (USCG, 1999)
Health Hazard
INHALATION, INGESTION AND SKIN ABSORPTION: Headache, anorexia, nausea, vomiting, abdominal pain, diarrhea, fever, pain in chest, difficult breathing, profuse sweating and thirst, dizziness and fatigue. SKIN: Discoloration and irritation. Corrosive to skin. (USCG, 1999)
Reactivity Profile
2,6-DINITROPHENOL can detonate or explode when heated under confinement (USCG, 1999). Phenols do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has pKa = 9.88). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

Response Recommendations

Isolation and Evacuation
Excerpt from 113 Polymerizable warning [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
Fire Extinguishing Agents: Water, dry chemical, CO2, foam (USCG, 1999)
Non-Fire Response
Excerpt from 113 Polymerizable warning [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
Safety glasses, self-contained breathing apparatus, pro- tective clothing, butyl rubber gloves and protective shoes. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Call a doctor.

INHALATION: Remove from contaminated area. Administer oxygen and artificial respiration if needed.

EYES: Flush with water.

SKIN: Wash with soap and water.

INGESTION: Gastric lavage and saline cathartics.

OTHER: To reduce fever, use cold packs and alcohol baths. (USCG, 1999)

Physical Properties

Chemical Formula:
  • C6H4N2O5
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 147.2°F (USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.68 (est) (USCG, 1999) - Denser than water; will sink
Boiling Point: data unavailable
Molecular Weight: 184.11 (USCG, 1999)
Water Solubility: data unavailable
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, 2,6- (573-56-8) 0.23 mg/m3 2.5 mg/m3 15 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
2,6-Dinitrophenol 573-56-8 10 pounds

(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