Merck 108487 1000 Urea Gr for Analyasis Acs 1 KG.

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Description
Catalogue Number	108487
Replaces	UX0065-1
Synonyms	Carbamide, Carbonyl diamide, Diaminomethanone, Carbonyldiamine

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Product Information
CAS number	57-13-6
EC number	200-315-5
Grade	ACS,Reag. Ph Eur
Hill Formula	CH₄N₂O
Chemical formula	CO(NH₂)₂
Molar Mass	60.05 g/mol
HS Code	3105 10 00
Structure formula Image
Quality Level	MQ200

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Physicochemical Information
Density	1.32 g/cm3 (20 °C)
Melting Point	134 °C
pH value	7.5 - 9.5 (480 g/l, H₂O, 25 °C)
Vapor pressure	<0.1 hPa (25 °C)
Bulk density	720 - 760 kg/m3
Solubility	1000 g/l

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Toxicological Information
LD 50 oral	LD50 Rat 8471 mg/kg
LD 50 dermal	LD50 Rat 8200 mg/kg

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Safety Information according to GHS
RTECS	YR6250000
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 (ex N)	99.0 - 100.5 %
Assay (ex N, calc. on dried substance)	99.0 - 101.5 %
Purity (DSC (differential scanning calorimetry))	≥ 99.5 mol%
Identity (IR-spectrum)	passes test
Appearance of solution (10 %; Wasser; color)	colourless
Appearance of solution (10 %; Wasser; clarity)	clear
In water insoluble matter	≤ 0.003 %
Acidity, Alkalinity	≤ 0.0005 meq/g
Melting point (DSC)	132 - 135 °C
NH₄ (Ammonium)	≤ 0.0500 %
Chloride (Cl)	≤ 0.0005 %
Sulfate (SO₄)	≤ 0.001 %
Heavy metals (as Pb)	≤ 0.0004 %
Heavy metals (ACS)	≤ 0.001 %
Biuret	≤ 0.05 %
Sulfated ash (600 °C)	≤ 0.005 %
Cu (Copper)	≤ 0.0001 %
Fe (Iron)	≤ 0.0001 %
Pb (Lead)	≤ 0.0002 %
Loss on Drying (105 °C)	≤ 1.0 %
Corresponds to ACS, Reag. Ph Eur