Merck 105621 2500 Sodium Silicate Solution Extra Pure 2,5 LT.

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Description
Catalogue Number	105621

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Product Information
HS Code	2839 19 00
Quality Level	MQ100

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Physicochemical Information
Boiling point	>100 °C (1013 hPa)
Density	1.35 g/cm3 (20 °C)
pH value	11.0 - 11.5 (50 g/l, H₂O, 20 °C)

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Toxicological Information
LD 50 oral	LD50 Rat > 2000 mg/kg

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Safety Information according to GHS
Hazard Pictogram(s)	\n
Hazard Statement(s)	H314: Causes severe skin burns and eye damage.
Precautionary Statement(s)	P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.\nP303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.\nP304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.\nP305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.\nP363: Wash contaminated clothing before reuse.\nP405: Store locked up.
Signal Word	Danger
Storage class	8B Non-combustible, corrosive hazardous materials
WGK	WGK 1 slightly hazardous to water
Disposal	14\nInorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).

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Storage and Shipping Information
Storage	Store at +15°C to +25°C.

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Specifications
Identity	passes test
Assay (acidimetric, Na₂O)	7.5 - 8.5 %
Assay (acidimetric, SiO₂)	25.5 - 28.5 %
Density (20 °C)	1.296 - 1.396 g/ml
Carbonate (as CO₂)	passes test
Fe (Iron)	≤ 50 ppm
Heavy metals (as Pb)	≤ 50 ppm