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L-Cysteine hydrochloride monohydrate



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Product Code : LC1777

Product Specification
LC1777 L-Cysteine hydrochloride monohydrate
suitable for use as excipient exp Ph Eur,USP

 

Order number Packaging Quantity Price €
AC28777 Plastic bottle 100 g Inquire
AC28777 Plastic bottle 1 kg Inquire
AC28777 Plastic drum 10 kg Inquire

 

Product information
Grade Ph Eur,USP
Hill Formula C3H8ClNO2S * H2O
HS Code 2930 90 16
EC number 200-157-7
Molar mass 175.64 g/mol
CAS number 7048-04-6

 

Chemical and physical data
Solubility 650 g/l (20 Â°C)
Melting point 168 - 170 Â°C
Molar mass 175.64 g/mol
Bulk density 780 kg/m3
pH value 0.8 - 1.2 (100 g/l, H2O, 20 Â°C)

 

Safety information
RTECS HA2285000
Storage class 10 - 13 Other liquids and solids
WGK WGK 1 slightly water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

 

Specifications
Assay (iodometric, calc. on dried substance) 98.5 - 101.0 %
Identity
- IR-spectrum		 passes test
- chloride passes test
Appearance white to almost white crystalline powder or colorless crystals
Appearance of solution (25 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		 +5.5° to +7.0°
- α 25/D, 80 g/l, hydrochloric acid 6 mol/l, calc. on dried substance +5.7° to +6.8°
Sulfate (SO4) ≤ 300 ppm
Heavy metals (as Pb) ≤ 10 ppm
Fe (Iron) ≤ 20 ppm
NH4 (Ammonium) ≤ 200 ppm
Ninhydrin - positive substances (total (TLC)) ≤ 0.5 %
Residual solvents (Ph. Eur./USP/ICH) excluded by manufacturing proces
Sulfated ash (600 Â°C) ≤ 0.1 %
Loss on drying (Vacuum < 0.7 kPa, P2O5, 24 h) 8.0 - 12.0 %
Bacterial endotoxins ≤ 6.0 I.U./g
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