Merck 101047 1000 Aluminium Potassium Sulfate Dodecahydrate Gr For Analysis Acs,Reag. Ph Eur 1 KG.

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Description
Catalogue Number	101047
Synonyms	Potassium aluminium sulfate, Alum potassium, Potassium alum

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Product Information
CAS number	7784-24-9
EC number	233-141-3
Grade	ACS,Reag. Ph Eur
Hill Formula	AlKO₈S₂ * 12 H₂O
Chemical formula	KAl(SO₄)₂ * 12 H₂O
Molar Mass	474.39 g/mol
HS Code	2833 30 00
Quality Level	MQ300

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Physicochemical Information
Density	1.75 g/cm3 (20 °C)
Melting Point	92 °C
pH value	3.0 - 3.5 (100 g/l, H₂O, 20 °C)
Bulk density	900 kg/m3
Solubility	139 g/l

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Safety Information according to GHS
RTECS	WS5690000
Storage class	10 - 13 Other liquids and solids
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 +2°C to +30°C.

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Specifications
Assay (complexometric)	99.0 - 100.5 %
Identity	passes test
Appearance of solution	passes test
Insoluble matter	≤ 0.005 %
pH-value (10 %; in water)	3.0 - 3.5
Chloride (Cl)	≤ 0.0005 %
Heavy metals (as Pb)	≤ 0.001 %
Cd (Cadmium)	≤ 0.0005 %
Cu (Copper)	≤ 0.0005 %
Fe (Iron)	≤ 0.0005 %
Na (Sodium)	≤ 0.005 %
NH₄ (Ammonium)	≤ 0.005 %
Pb (Lead)	≤ 0.0005 %
Corresponds to ACS,Reag. Ph Eur