1-(2-Pyridylazo)-2-naphthol CAS 85-85-8

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CAS: 85-85-8

MF: C₁₅H₁₁N₃O

MW: 249.27

Physical Description	Yellow-orange to red powder
Solubility (0.1% in ethanol)	Clear, orange solution
Melting Point	135 - 143 °C
Wavelength of Maximum Absorption (λmax)	463.0 - 467.0 nm
Absorptivity (1%/1cm)	≥ 600
Loss on Drying	≤ 3.0%
Assay (Titration)	≥ 98.0%
Sensitivity as Indicator	To pass test
Specification Version	1.0

Pictograms
Signal word	Warning
Hazard statements	H315: Causes skin irritation H319: Causes serious eye irritation H335: May cause respiratory irritation H336: May cause drowsiness or dizziness
Precautionary statements	P261: Avoid breathing dust/fume/gas/mist/vapors/spray. P280: Wear protective gloves/protective clothing/eye protection/face protection. P302+P352: IF ON SKIN: wash with plenty of water. P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing.
Supplementary EUH statements
UN Number	-
WGK	WGK 3
SDS Version	3.0