Millipore Sigma Vibrant Logo
Attention: We have moved. Merck Millipore products are no longer available for purchase on MerckMillipore.com.Learn More

104351 L-Histidine

L-Histidine for biochemistry. CAS 71-00-1, pH 7.7 (10 g/l, H₂O, 20 °C).

L-Histidine MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: His

View Products on Sigmaaldrich.com
104351
Purchase on Sigma-Aldrich

Overview

Replacement Information

Key Spec Table

CAS #Empirical Formula
71-00-1C₆H₉N₃O₂

Products

Catalogue NumberPackaging Qty/Pack
1.04351.0025 Glass bottle 25 g
1.04351.0100 Glass bottle 100 g
Description
Catalogue Number104351
SynonymsHis
References
Product Information
CAS number71-00-1
EC number200-745-3
Hill FormulaC₆H₉N₃O₂
Molar Mass155.16 g/mol
HS Code2933 29 92
Structure formula ImageStructure formula Image
Quality LevelMQ100
Applications
ApplicationL-Histidine for biochemistry. CAS 71-00-1, pH 7.7 (10 g/l, H₂O, 20 °C).
Biological Information
Physicochemical Information
Density1.449 g/cm3 (20 °C)
Melting Point285 °C (decomposition)
pH value7.0 - 8 (15.5 g/l, H₂O, 25 °C)
Bulk density430 kg/m3
Solubility38.2 g/l
Dimensions
Materials Information
Toxicological Information
LD 50 oralLD50 Rat > 5110 mg/kg
Safety Information according to GHS
RTECSMS3070000
Storage class10 - 13 Other liquids and solids
WGKWGK 1 slightly hazardous to water
Safety Information
Product Usage Statements
Storage and Shipping Information
StorageStore at +5°C to +30°C.
Packaging Information
Transport Information
Supplemental Information
Specifications
Assay (acidimetric, calculated on dried substance)99.0 - 101.0 %
Identity (IR-spectrum)passes test
Appearancewhite to almost white, fine-crystalline powder or colorless crystals
Appearance of solution (50 g/l; water)clear and colorless
Spec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance)+11.4 to +12.4
Chloride (Cl)≤ 200 ppm
Sulfate (SO₄)≤ 200 ppm
Heavy metals (as Pb)≤ 10 ppm
As (Arsenic)≤ 5.0 ppm
Ca (Calcium)≤ 10 ppm
Co (Cobalt)≤ 5 ppm
Fe (Iron)≤ 5 ppm
K (Potassium)≤ 100 ppm
Mg (Magnesium)≤ 5 ppm
Na (Sodium)≤ 100 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)≤ 0.2 %
Global Trade Item Number
Catalogue Number GTIN
1.04351.0025 04022536050294
1.04351.0100 04022536050300