MERCK 107434.0010 L-Proline For Biochemistry

Key Spec Table

CAS #	Empirical Formula
147-85-3	C₅H₉NO₂

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Description
Catalogue Number	107434
Synonyms	Pro

Product Information
CAS number	147-85-3
EC number	205-702-2
Hill Formula	C₅H₉NO₂
Molar Mass	115.13 g/mol
HS Code	2933 99 99
Structure formula Image
Quality Level	MQ100

Applications
Application	L-Proline for biochemistry. CAS 147-85-3, pH 5 - 7 (100 g/l, H₂O, 20 °C).

Physicochemical Information
Density	1.4 g/cm3 (45 °C)
Melting Point	221 °C (decomposition)
pH value	5 - 7 (100 g/l, H₂O, 20 °C)
Bulk density	500 kg/m3
Solubility	1500 g/l

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

Safety Information according to GHS
RTECS	TW3584000
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	3Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Storage and Shipping Information
Storage	Store at +2°C to +30°C.

Specifications
Assay (perchloric acid titration, calculated on dried substance)	99.0 - 101.0 %
Identity (IR-spectrum)	passes test
Appearance	white or almost white, crystalline powder or colorless crystals
Appearance of solution (50 g/l; water)	clear and colorless
Spec. rotation (α 20/D, 40 g/l, water, calc. on dried substance)	-84.0 to -86.0
Chloride (Cl)	≤ 200 ppm
Sulfate (SO₄)	≤ 300 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)	≤ 0.4 %