Merck 107754 1000 Silicagel 60 Extra Pure 1 KG.

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Description
Catalogue Number	107754

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Product Information
CAS number	7631-86-9
EC number	231-545-4
Hill Formula	O₂Si
Chemical formula	SiO₂
Molar Mass	60.08 g/mol
HS Code	2811 22 30
Quality Level	MQ100

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Applications
Application	Silica gel 60 extra pure for column chromatography 0.063 - 0.200 mm (70 - 230 mesh ASTM). Silica gel 60 CAS No. 7631-86-9, EC Number 231-545-4.

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Physicochemical Information
Boiling point	2230 °C (1013 hPa)
Density	2.56 g/cm3 not applicable
Melting Point	1713 °C
pH value	3.7 - 4.7 (>= 40 g/l, H₂O, 25 °C) (slurry)
Bulk density	200 - 1430 kg/m3

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Safety Information according to GHS
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	32\nChromatographic residues: Aggressive, explosive (e.g. peroxides) or toxic substances in chromatographic layers or sorbents must be eliminated using suitable methods (washing out, elution) prior to disposal. The solvents used for elution can in many cases be reutilized. Larger quantities of sorbents (e.g. from columns) should be freed from solvents (filtration, drying) and packed into rip-resistant plastic sachets; container I. TLC carrier materials and columns should be disposed of together with the corresponding waste materials (aluminium, glass, plastic); container K.

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

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Specifications
pH-value (10 % suspension)	6.0 - 7.5
Chloride (Cl)	≤ 0.008 %
Sulfate (SO₄)	≤ 0.003 %
Cd (Cadmium)	≤ 0.0005 %
Cu (Copper)	≤ 0.0005 %
Fe (Iron)	≤ 0.002 %
Pb (Lead)	≤ 0.0005 %
Zn (Zinc)	≤ 0.0005 %
Particle size	90% between 0.063-0.200 mm
Loss on drying (150 °C)	≤ 7.0 %
UV absorption (Dichloro methane extract)	conforms