2,5-Dinitrophenol
2,5-Dinitrophenol (CAS: 329-71-5) is an organic compound with the molecular formula (O2N)2C6H3OH and a molecular weight of 184.11 g/mol. This substance is recognised for its utility as an analytical reagent and a building block in chemical synthesis. It is typically supplied as a compound containing approximately 20% water, with an assay of 97%. Its characteristic properties make it valuable in specific laboratory and industrial applications.
- IUPAC
- γ-Dinitrophenol
- Synonyms
- (O2N)2C6H3OHγ-Dinitrophenol
Analytical Reagent
2,5-Dinitrophenol serves as a reagent in analytical chemistry, particularly in titrations and as a pH indicator. Its distinct colour changes at specific pH ranges facilitate accurate chemical analysis.
Chemical Synthesis
As an organic building block, 2,5-Dinitrophenol can be employed in the synthesis of more complex organic molecules. Its dinitrophenol structure offers reactive sites for various chemical transformations.
pH Indicator
This compound functions as a pH indicator, exhibiting colour transitions that are useful for determining the acidity or alkalinity of solutions in laboratory settings.
| Molecular weight | 184.11 |
|---|---|
| Linear formula | (O2N)2C6H3OH |
| Assay | 97% |
| Contains / stabiliser | ~20% water |
| Melting point | 103-106 °C(lit.) |
Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H331Toxic if inhaled
- H373May cause damage to organs through prolonged exposure
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1320 4.1/PG 1 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/24/25-33-51/53 |
| Safety statements (S) | 28-37-45-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2,5-Dinitrophenol used for?
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2,5-Dinitrophenol is primarily used as an analytical reagent, a pH indicator, and a building block in chemical synthesis.
What is the CAS number and chemical formula for 2,5-Dinitrophenol?
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The CAS number is 329-71-5 and the linear formula is (O₂N)₂C₆H₃OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,5-Dinitrophenol with an assay of 97%, containing approximately 20% water. This is considered a technical or research grade; TSS does not represent it as USP, BP, or EP grade unless explicitly stated in the product specifications.
What are the key safety considerations for handling 2,5-Dinitrophenol?
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2,5-Dinitrophenol is classified as Dangerous (GHS06, GHS08, GHS09) and carries hazard statements H301, H311, H331, H373, and H411, indicating it is toxic if swallowed, in contact with skin, or if inhaled, may cause damage to organs through prolonged exposure, and is toxic to aquatic life with long-lasting effects. Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and P2 respirator cartridges, must be used. Handle with extreme caution in a well-ventilated area.
How is 2,5-Dinitrophenol packed and shipped?
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2,5-Dinitrophenol is packed and shipped according to relevant regulations, including UN 1320 classification for transport. TSS adheres to all international shipping and export standards.
How can I request a quote or sample for 2,5-Dinitrophenol?
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To request a quote or a sample of 2,5-Dinitrophenol, please contact our sales team through the provided channels on the Tech Serve Solutions website.
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