MERCK 106202.0005 1-Naphtholbenzein İndicator Reag. CAS No.145-50-6

Key Spec Table

CAS #	EC Number	Hill Formula	Molar Mass	Grade Value
145-50-6	205-656-3	C₂₇H₁₈O₂	374.43 g/mol	Reag. Ph Eur

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Description
Catalogue Number	106202

Product Information
CAS number	145-50-6
EC number	205-656-3
Grade	Reag. Ph Eur
Hill Formula	C₂₇H₁₈O₂
Molar Mass	374.43 g/mol
HS Code	2914 50 90
Structure formula Image
Quality Level	MQ200

Physicochemical Information
Melting Point	243 - 245 °C
Bulk density	120 - 300 kg/m3

Safety Information according to GHS
Hazard Statement(s)	H413: May cause long lasting harmful effects to aquatic life.
Precautionary Statement(s)	P273: Avoid release to the environment.P501: Dispose of contents/ container to an approved waste disposal plant.
Storage class	10 - 13 Other liquids and solids
WGK	WGK 2 obviously hazardous to water
Disposal	3Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Storage and Shipping Information
Storage	Store at +2°C to +30°C.

Specifications
Identity (IR-spectrum)	passes test
Identity (UV/VIS-Spectrum)	passes test
Absorption maximum λmax. (perchloric acid (0,1 mol/l) in acetic acid)	622 - 626 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; perchloric acid (0,1 mol/l) in acetic acid; calculated on dried substance)	640 - 950
Transition range	pH 8,0 - pH 9,6; apricot - turquoiseblue
Loss on Drying (105°C)	≤ 7 %
Suitability as indicator (for non-aqueous titration)	passes test