merck-102838-ee-437.jpg
merck-102838-ee-437.jpg

MERCK 102838.0025 L-Cysteine for Biochemistry (SD.M.102838.0025)

Marka : MERCK
Fiyat : 0,00 ₺  + KDV
KDV Dahil : 0,00 ₺

 

 

MERCK 102838.0025 L-Cysteine for Biochemistry

 

Description
Catalogue Number 102838
Synonyms a-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid
Product Information
CAS number 52-90-4
EC number 200-158-2
Hill Formula C₃H₇N O₂S
Molar Mass 121.16 g/mol
HS Code 2930 90 12
Structure formula Image Structure formula Image
Quality Level MQ100
Applications
Application L-Cysteine for biochemistry. CAS 52-90-4, pH 4.5 - 5.5 (100 g/l, H₂O, 20 °C).
Physicochemical Information
Density 1.66 g/cm3 (45 °C)
Ignition temperature 420 °C
Melting Point >203 °C
pH value 4.5 - 5.5 (100 g/l, H₂O, 20 °C)
Bulk density 300 kg/m3
Solubility 280 g/l
Toxicological Information
LD 50 oral LD50 Rat 1890 mg/kg
Safety Information according to GHS
RTECS HA1600000
Storage class 10 - 13 Other liquids and solids
WGK WGK 1 slightly hazardous to water
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.
Safety Information
Categories of danger harmful
Storage and Shipping Information
Storage Store below +30°C.
Specifications
Assay (perchloric acid titration, calculated on dried substance) ≥ 99.0
Identity (IR-spectrum) passes test
Appearance colorless to white, needle-shaped crystals
Appearance of solution (100 g/l, hydrochloric acid  2 mol/l) clear and colorless
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 1 mol/l, calc. on dried substance) +8.3 to +9.5
pH (25 g/l; CO₂-free water) 4.5 - 5.5
Chloride (Cl) ≤ 0.04 %
Sulfate (SO₄) ≤ 0.03 %
Heavy metals (as Pb) ≤ 0.001 %
As (Arsenic) ≤ 0.0001 %
Ca (Calcium) ≤ 0.001 %
Co (Cobalt) ≤ 0.0005 %
Fe (Iron) ≤ 0.001 %
K (Potassium) ≤ 0.0005 %
Mg (Magnesium) ≤ 0.0005 %
Na (Sodium) ≤ 0.01 %
NH₄ (Ammonium) ≤ 0.02 %
Zn (Zinc) ≤ 0.0005 %
Foreign amino acids ≤ 0.5 %
Other ninhydrine positive substances ≤ 0.1 %
Loss on drying (105 °C; 3 h) ≤ 0.5 %
Global Trade Item Number
Catalogue Number GTIN
1028380025 04022536037363
1028380100 04022536037370
1028381000 04022536037387
1028389010 04022536692678
cultureSettings.RegionId: 0 cultureSettings.LanguageCode: TR