Merck 101542 0100 Arginine For Biochemistry 100 GR.

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Description
Catalogue Number	101542
Synonyms	Arg

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Product Information
CAS number	74-79-3
EC number	200-811-1
Hill Formula	C₆H₁₄N₄O₂
Molar Mass	174.2 g/mol
HS Code	2925 29 00
Structure formula Image
Quality Level	MQ100

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Applications
Application	L-Arginine for biochemistry. CAS 74-79-3, pH 11.4 (100 g/l, H₂O, 20 °C).

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Physicochemical Information
Density	1.1 g/cm3
Melting Point	223 - 224 °C (decomposition)
pH value	11.4 (100 g/l, H₂O, 20 °C)
Vapor pressure	<0.1 hPa (25 °C)
Bulk density	640 kg/m3
Solubility	148.7 g/l

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Toxicological Information
LD 50 oral	LD50 Rat > 5110 mg/kg

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Safety Information according to GHS
RTECS	CF1934200
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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Safety Information
Categories of danger	irritant

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Storage and Shipping Information
Storage	Store at +5°C to +30°C.

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Specifications
Assay (perchloric acid titration, calculated on dried substance)	99.0 - 101.0 %
Identity (IR-spectrum)	passes test
Appearance	white to almost white, crystalline powder or colorless crystals
Appearance of solution (50 g/l; water)	clear and not more intense in color than reference solution BY₆
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 250 g/l, calc. on dried substance)	+25.5 to +28.5
Chloride (Cl)	≤ 200 ppm
Sulfate (SO₄)	≤ 200 ppm
Heavy metals (as Pb)	≤ 10 ppm
As (Arsenic)	≤ 5 ppm
Ca (Calcium)	≤ 10 ppm
Co (Cobalt)	≤ 5 ppm
Fe (Iron)	≤ 5 ppm
K (Potassium)	≤ 5 ppm
Mg (Magnesium)	≤ 5 ppm
Na (Sodium)	≤ 50 ppm
Zn (Zinc)	≤ 5 ppm
Ninhydrin-positive substances (LC) (any ninhydrin-positive impurity)	≤ 0.2 %
Ninhydrin-positive substances (LC) (ammonium (570 nm))	≤ 0.02 %
Ninhydrin-positive substances (LC) (total impurities)	≤ 0.5 %
Loss on drying (105 °C; 3 h)	≤ 0.30 %