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| CAS No.: | 329-71-5 |
|---|---|
| Name: | 2,5-DINITROPHENOL |
| Article Data: | 23 |
| Molecular Structure: | |
|
|
|
| Formula: | C6H4 N2 O5 |
| Molecular Weight: | 184.108 |
| Synonyms: | 2,5-DNP;2,5-Dinitrophenol; NSC 90441; Phenol, g-dinitro- |
| Density: | 1.65g/cm3 |
| Melting Point: |
103-106 °C(lit.) |
| Boiling Point: | 309.6°Cat760mmHg |
| Flash Point: | 141.5°C |
| Hazard Symbols: |
 
|
| Risk Codes: | 23/24/25-33-51/53 |
| Safety: | A poison by intraperitoneal route. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also 2,4-DINITROPHENOL. |
| PSA: | 111.87000 |
| LogP: | 2.25500 |
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Chemistry
Empirical Formula: C6H4N2O5
Molecular Weight: 184.1064 g/mol
EINECS: 206-348-1
Index of Refraction: 1.66
Density: 1.65 g/cm3
Flash Point: 141.5 °C
Enthalpy of Vaporization: 57.24 kJ/mol
Boiling Point: 309.6 °C at 760 mmHg
Vapour Pressure: 0.000346 mmHg at 25 °C
Melting point: 103-106 °C(lit.)
Water solubility: Slowly mixes with water
Appearance: Yellow crystalline solid with a sweet musty odor
Structure of 2,5-Dinitrophenol (CAS NO.329-71-5):
IUPAC Name: 2,5-Dinitrophenol
Product Categories of 2,5-Dinitrophenol (CAS NO.329-71-5): Analytical Chemistry;pH Indicators
Uses
2,5-Dinitrophenol (CAS NO.329-71-5) can be used in organic synthesis and used in chemical analysis as indicator.
Production
2,5-Dinitrophenol (CAS NO.329-71-5) can be derived by nitration with the Inter-nitrophenol. Having 40% of Nitric acid heated to 40 °C, and slowly adding Nitro-phenol at 40-60 °C with the 3h. Then heating 1h at 50-70 °C, and take them being cooled and giving out the acid solution. Having the solid material grinding, and wash out acid with ice water, and then drained. At last take the product dissolved in cold ethanol to get the insoluble product.
Toxicity Data With Reference
| 1. | mmo-sat 100 µg/plate | SAIGBL Sangyo Igaku. Japanese Journal of Industrial Health. 29 (1987),34. | ||
| 2. | ipr-rat LD50:150 mg/kg | JPPMAB Journal of Pharmacy and Pharmacology. 11 (1959),462. | ||
| 3. | ipr-mus LD50:273 mg/kg | JPPMAB Journal of Pharmacy and Pharmacology. 11 (1959),462. | ||
| 4. | ipr-dog LDLo:100 mg/kg | JPPMAB Journal of Pharmacy and Pharmacology. 11 (1959),462. |
Safety Profile
A poison by intraperitoneal route. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also 2,4-DINITROPHENOL.
Hazard Codes: 
T,
N
Risk Statements: 23/24/25-33-51/53
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.
R33:Danger of cumulative effects.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 28-37-45-61
S28:After contact with skin, wash immediately with plenty of soap-suds.
S37:Wear suitable gloves.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
Specification
2,5-Dinitrophenol ,its cas register number is 329-71-5. It also can be called gamma-Dinitrophenol ;and Phenol, 2,5-dinitro- . It 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.