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2,5-DINITROPHENOL

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2,5-DINITROPHENOL Basic information

Product Name:
2,5-DINITROPHENOL
Synonyms:
  • 2,5-Dinitrofenol
  • 2,5-dinitro-pheno
  • 2,5-Dnp
  • 2,5-Dinitrophenol (wetted with ca. 20% Water) (unit weight on dry weight basis)
  • 2,5-Dinitrophenol ( betta )
  • gamma-dinitro-pheno
  • Phenol, 2,5-dinitro-
  • Phenol, gamma-dinitro-
CAS:
329-71-5
MF:
C6H4N2O5
MW:
184.11
EINECS:
206-348-1
Product Categories:
  • Analytical Reagents
  • Analytical/Chromatography
  • Building Blocks
  • C6 to C8
  • Chemical Synthesis
  • Indicators
  • Analytical Chemistry
  • Indicator (pH)
  • pH Indicators
  • pH Indicators - Solids
  • Organic Building Blocks
  • Oxygen Compounds
  • Phenols
  • Titration
  • Nitro
Mol File:
329-71-5.mol
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2,5-DINITROPHENOL Chemical Properties

Melting point:
103-106 °C(lit.)
Boiling point:
318.03°C (rough estimate)
Density 
1.7195 (rough estimate)
refractive index 
1.4738 (estimate)
solubility 
Solubility Sparingly soluble in water; soluble in ethanol, ether
pka
5.21, 5.1, 5.0(at 25℃)
color 
Yellowish needles
PH Range
4(colourless)-5.8(yellow)
Merck 
14,3281
BRN 
1913411
Major Application
Liquid crystal films, electrophotographic materials, adhesives, inks, lubricants, preservation of cut flowers, food storage, materials for evaluating dental cariesactivity
CAS DataBase Reference
329-71-5(CAS DataBase Reference)
EPA Substance Registry System
2,5-Dinitrophenol (329-71-5)
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Safety Information

Hazard Codes 
T,N
Risk Statements 
23/24/25-33-51/53
Safety Statements 
28-37-45-61
RIDADR 
UN 1320 4.1/PG 1
WGK Germany 
3
RTECS 
SL2900000
HazardClass 
4.1
PackingGroup 
I
HS Code 
29089990
Hazardous Substances Data
329-71-5(Hazardous Substances Data)

MSDS

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2,5-DINITROPHENOL Usage And Synthesis

Chemical Properties

Yellow needles, flammable. Soluble in ether, benzene, hot water, and ethanol.

General Description

Yellow crystalline solid with a sweet musty odor. Sinks and mixes slowly with water.

Air & Water Reactions

Slowly mixes with water.

Reactivity Profile

2,5-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 Ka = 1.3 x 10^[-10]). 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.

Health Hazard

INHALATION, INGESTION OR SKIN ABSORPTION: Fatigue, thirst, sweating, flushing of face, nausea, vomiting, abdominal pain, diarrhea; restlessness, anxiety, excitement occasionaly leading to convulsions; fever, tachycardia, labored respiration, cyanosis, and sometimes muscle cramps. Loss of consciousness, cessation of breathing and death. EYES: Causes dilation of pupils or posterior subcapsular opacities or cataracts. SKIN: Discoloration, irritation, and dermatitis.

Purification Methods

Crystallise 2,5-dinitrophenol from H2O with a little EtOH. [Beilstein 6 IV 1383.]

2,5-DINITROPHENOL Preparation Products And Raw materials

Raw materials

2,5-DINITROPHENOLSupplier