C5H7N3
109.13 g/mol
Dye & PigmentDanger
2,6-Diaminopyridine
CAS141-86-6EC205-507-2
Category
Dye & Pigment
Compound Class
Amine
Primary Use
coupler in hair dyes
2,6-Diaminopyridine is a chemical compound used primarily as a coupler in hair dye formulations. It reacts with oxidized dye precursors to generate a range of colors in permanent and semi-permanent hair coloring products.
coupler in hair dyes
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
2,6-Pyridinediamine sulfate
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chemical intermediate for research and manufacturing
ReferenceSame Category
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CAS14121-47-2
fluorescent solvent dye
ReferenceSame Category
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Fluorescent solvent dye
ReferenceSame Category
Solvent blue 36
CAS14233-37-5
Solvent dye for coloring plastics
ReferenceSame Category
2-Chlorobenzene-1-diazonium zinc chloride (2/1/4)
CAS14263-92-4
diazonium salt for azo dye
Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H411Toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 2,6-Diaminopyridine (CAS 141-86-6) is 2933.39.
HS code (international, 6-digit)
2933.39
EU CN code (8-digit)
2933 39 99
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
pyridine-2,6-diamine
InChIKey
VHNQIURBCCNWDN-UHFFFAOYSA-N
SMILES
C1=CC(=NC(=C1)N)N
Synonyms (16)
- 26-DAP
- 2,6-Diaminopyridine
- 2,6-diaminopyrdine
- 2,6-pyridinediamine
- 6-amino-2-iminopyridine
- DAP (amine)
- Diaminopyridine
- Diaminopyridine, 2,6-
- RODOL 26PYR
- pyridine, 2,6-diamino-
- pyridine-2,6-diamine
- pyridine-2,6-diyldiamine
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