Merck 100132 0100 Barbituric Acid Gr For Analysis 100 GR.

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Description
Catalogue Number	100132
Replaces	BX0035; BX0035-3
Synonyms	2,4,6-Trihydroxypyrimidine, N,N'-Malonylurea

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Product Information
CAS number	67-52-7
EC number	200-658-0
Hill Formula	C₄H₄N₂O₃
Molar Mass	128.09 g/mol
HS Code	2933 52 00
Structure formula Image
Quality Level	MQ300

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Physicochemical Information
Flash point	150.00 °C
Melting Point	250 - 252 °C (decomposition)
pH value	2 - 3 (50 g/l, H₂O, 60 °C)
Bulk density	720 kg/m3
Solubility	11.45 g/l

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Toxicological Information
LD 50 oral	LD50 Rat > 5000 mg/kg

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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	3\nRelatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

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

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Specifications
Assay (acidimetric)	≥ 99
Identity (IR-spectrum)	passes test
Chloride (Cl)	≤ 40 ppm
Heavy metals (as Pb)	≤ 50 ppm
Fe (Iron)	≤ 10 ppm
Sulfated ash	≤ 0.1 %
Loss on Drying (105 °C)	≤ 0.1 %
Suitability as reagent (for cyanide determination)	passes test