Xylenol Blue CAS 125-31-5

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CAS: 125-31-5

MF: C₂₃H₂₂O₅S

MW: 410.49

Physical Description	Red-brown to dark brown powder
pH Transition Range(s)	1.2 - 2.8 (red to yellow)
	7.5 - 9.6 (yellow to blue)
Solubility (0.1% in methanol)	Clear solution
Wavelength of Maximum Absorption (λmax)	419.0 - 429.0 nm (in methanol)
Absorptivity (1%/1cm)	≥ 200 (at λmax)
Extinction Coefficient	≥ 8000 (at λmax)
Loss on Drying	≤ 5.0% (110°C, 1h)
Specification Version	1.1

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