Basic information
- CAS
59782-85-3- Standard SMILES
O=C(O)c1cc(Cl)cnc1Cl- InChIKey
SXQSMLIMBNMUNB-UHFFFAOYSA-N- Molecular formula
- C6H3Cl2NO2
- Average molar mass
- 192 g/mol
- Monoisotopic mass
- 190.9540837
Names & identifiers
- Preferred name
- 2,5-Dichloropyridine-3-carboxylic acid
- IUPAC
- 2,5-dichloropyridine-3-carboxylic acid
- English name
- 2,5-Dichloronicotinic acid
- Molecular formula
- C6H3Cl2NO2
- Molecular weight
- 192
Names & synonyms
Show more names
Database identifiers
- CAS
59782-85-3- PubChem CID
- 2736085
- DTXSID
DTXSID50371116- EC Number
- 692-370-0
- Nikkaji
- J90.062A
Properties
Computed structural properties
- XLogP
- 2
- Topological polar surface area
- 50.2 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 1
- Heavy atoms
- 11
- Formal charge
- 0
- Complexity
- 165
Physicochemical properties
- Melting point
- 154 · 154-155°C
- Boiling point
- 323.7 · 323.7±37.0 °C(Predicted)
- Density
- 1.61 · 1.61
- storage temp.
- Inert atmosphere,Room Temperature
- solubility
- soluble in Methanol
- pka
- 1.63 · 1.63±0.25(Predicted)
- form
- Powder
- color
- White
- InChI
- InChI=1S/C6H3Cl2NO2/c7-3-1-4(6(10)11)5(8)9-2-3/h1-2H,(H,10,11)
- InChIKey
- SXQSMLIMBNMUNB-UHFFFAOYSA-N
- SMILES
- C1(Cl)=NC=C(Cl)C=C1C(O)=O
- CAS DataBase Reference
- 59782 · 59782-85-3(CAS DataBase Reference)
- UNSPSC Code
- 12352106 · 12352106
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 302 · H302-H315-H319-H335
- Precautionary statements
- 261 · P261-P280a-P304+P340-P305+P351+P338-P405-P501a
- Hazard Codes
- Xn
- Risk Statements
- 22 · 22
- WGK Germany
- 3 · 3
- HazardClass
- IRRITANT
- HS Code
- 2933399990 · 2933399990
- Storage Class
- 11 · 11 - Combustible Solids
- Hazard Classifications
- 4 Oral · Acute Tox. 4 Oral
Safety & regulation
GHS classification
GHS Classification
Warning
H302 (97.6%): Harmful if swallowed [Warning Acute toxicity, oral]
P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 42 reports by companies from 4 notifications to the ECHA C&L Inventory.
Hazard information
Safety data
- wgk
- 3
- hs_code
- 2933399990
- risk_code
- 22
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xn
- hazard_class
- IRRITANT
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H302-H315-H319-H335
- Hazard Classifications
- Acute Tox. 4 Oral
- Precautionary statements
- P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Chemistry & industry
Applications
Uses2,5-Dichloronicotinic acid can be used in pharmaceutical synthesis.
Preparation methods
PreparationIn an aprotic solvent, 3-cyanopyridine and a solid halogenating reagent are added, and the mixture is heated to 50-150℃ for 6-30 hours. An extractant, water, and a reducing agent are added, and the mixture is stirred for 10-30 minutes. The pH is adjusted to alkaline with an alkaline solution, and the organic phase is concentrated. The organic phase is dissolved in a polar solvent, and water is added dropwise to precipitate a solid. The solid is collected by filtration. Concentrated hydrochloric acid is added to the solid, and the mixture is heated to 95-100℃ for 30-60 minutes. The pH is adjusted to 1-4 with an alkaline solution, precipitating a white solid to obtain 5-halogenated nicotinic acid. The synthesis of 2,5-dichloronicotinic acid can be attempted by changing the halogenating reagent used in the synthesis.
Upstream & downstream products
Upstream raw materials
Suppliers100 total
Related reactions
Compound notes
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