4-Methylumbelliferone CAS 90-33-5

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CAS: 90-33-5

MF: C₁₀H₈O₃

MW: 176.17

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 2
SDS Version	3.0

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Physical Description	White to off-white crystalline powder
Solubility (5% in methanol)	Clear, colourless to pale yellow-brown solution (may need warming)
Melting Point	188 - 193 °C
Sulfated Ash	≤ 0.1%
Assay	98.0 - 102.0 % (anhydrous basis)
Specification Version	1.0

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