ChemicalBook > Product Catalog > Biochemical Engineering > Biochemical Reagents > Acid-base indicator > 2,5-DINITROPHENOL
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
- pka5.21, 5.1, 5.0(at 25℃)
- color Yellowish needles
- PH Range4(colourless)-5.8(yellow)
- Merck 14,3281
- BRN 1913411
- Major ApplicationLiquid crystal films, electrophotographic materials, adhesives, inks, lubricants, preservation of cut flowers, food storage, materials for evaluating dental cariesactivity
- CAS DataBase Reference329-71-5(CAS DataBase Reference)
- EPA Substance Registry System2,5-Dinitrophenol (329-71-5)
2,5-DINITROPHENOL Usage And Synthesis
- Chemical PropertiesYellow needles, flammable. Soluble in ether, benzene, hot water, and ethanol.
- General DescriptionYellow crystalline solid with a sweet musty odor. Sinks and mixes slowly with water.
- Air & Water ReactionsSlowly mixes with water.
- Reactivity Profile2,5-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 HazardINHALATION, 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 MethodsCrystallise 2,5-dinitrophenol from H2O with a little EtOH. [Beilstein 6 IV 1383.]
2,5-DINITROPHENOL Preparation Products And Raw materials
- Raw materials3-Nitrophenol
- 4-Chloro-3-methyl-2,6-dinitrophenol 4-CHLORO-2,6-DINITROPHENOL 5-Isobutyl-2,4-dinitrophenol 5-METHOXY-2,4-DINITROPHENOL 2-tert-Butyl-3,4-dinitrophenol 2,4-DINITROPHENOL-3,5,6-D3 (85% IN H2O) 97.6% 2,4-DINITROPHENOL (RING-D3, 98%) 5-Butyl-3,4-dinitrophenol 2-Amino-4,6-dinitrophenol, wetted with not less than 20% water 4-TERT-ANYL-2,6-DINITROPHENOL disodium [6-[(2-anilino-1-naphthyl)azo]-2,4-dinitrophenolato(2-)][3-hydroxy-4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulphonato(3-)]chromate(2-) dinosam 2-(1-methylbutyl)-4,6-dinitrophenol 2 4-DINITROPHENOL-UL-14C 2,4-Dinitrophenol anion 2-BROMO-4-CHLORO-3,6-DINITROPHENYL METHYL ETHER 2,5-DINITROPHENOL 2,5-DINITROANISOLE 2,3,6-TRINITROPHENOL