Anasayfa
Kimyasallar
Analitik Kimyasallar
L-Histidine Monohydrochloride For Biochemistry 25 Gr (Biyokimya İçin L-Histidin Monohidroklorür) CAS: 5934-29-2

L-Histidine Monohydrochloride For Biochemistry 25 Gr (Biyokimya İçin L-Histidin Monohidroklorür) CAS: 5934-29-2

Kategori

Analitik Kimyasallar

Marka

Merck

Stok Kodu

104350.0025

3 Günde Kargoda

Stok Sorunuz

L-Histidine Monohydrochloride For Biochemistry 25 Gr (Biyokimya İçin L-Histidin Monohidroklorür) CAS: 5934-29-2

Description
Catalogue Number	104350
Synonyms	His

Applications
Application	L-Histidine monohydrochloride monohydrate for biochemistry. CAS 5934-29-2, pH 3.5 - 4.5 (100 g/l, H₂O, 20 °C).

Physicochemical Information
Density	1.4723 g/cm3 (20 °C)
Melting Point	256 - 268 °C (decomposition)
pH value	4.38 - 4.48 (149.55 g/l, H₂O, 20 °C)
Vapor pressure	<0.1 hPa (20 °C)
Bulk density	770 kg/m3
Solubility	149.55 g/l

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H319: Causes serious eye irritation.
Precautionary Statement(s)	P264: Wash skin thoroughly after handling. P280: Wear eye protection/ face protection. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P337 + P313: If eye irritation persists: Get medical advice/ attention.
Signal Word	Warning
RTECS	MS3119000
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.

Storage and Shipping Information
Storage	Store below +30°C.

Specifications
Assay (alkalimetric, calculated on dried substance)	99.0 - 101.0 %
Identity (IR-spectrum)	passes test
Identity (Chloride)	passes test
Appearance	white to almost white crystalline powder or colorless crystals
Appearance of solution (50 g/l CO₂-free water)	clear and not more intense in color than reference solution BY₆
Spec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance)	+9.2 to +10.6
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 (150 °C)	7.0 - 10.0 %

Bu ürüne ilk yorumu siz yapın!