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1.01566

Millipore

L-Asparagine monohydrate

for biochemistry

Synonym(s):

L-Asparagine monohydrate, Asparaginic acid semiamide, Asn

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About This Item

Empirical Formula (Hill Notation):
C4H8N2O3 · xH2O
CAS Number:
5794-13-8
Molecular Weight:
132.12 (anhydrous basis)
MDL number:
MFCD00151038
UNSPSC Code:
12352209
EC Index Number:
200-735-9
NACRES:
NA.21

Quality Level

100

form

solid

pH

4.0-5.5 (20 °C, 20 g/L in H2O)

mp

215-217 °C (decomposes)

solubility

22 g/L

bulk density

530 kg/m3

storage temp.

2-30°C

InChI

1S/C4H8N2O3.H2O/c5-2(4(8)9)1-3(6)7;/h2H,1,5H2,(H2,6,7)(H,8,9);1H2/t2-;/m0./s1

InChI key

RBMGJIZCEWRQES-DKWTVANSSA-N

Related Categories

Application


  • Chiral Resolution and Amino Acid Racemase Applications: L-Asparagine monohydrate has been utilized in the immobilization of amino acid racemases complemented with preferential crystallization process for enhanced chiral resolutions (Carneiro et al., 2020).

  • Electro-optical Property Studies: L-Asparagine monohydrate can be used to prepare growth crystals to study its electro-optical properties, particularly in noncentrosymmetric crystal environments. (Shkir et al., 2015).


Analysis Note

Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 %Identity (IR-spectrum): passes testIdentity (specific rotation): passes testAppearance: white to almost white crystalline powder or colorless crystalsAppearance of solution (20 g/l, CO₂-free water): clear and colorlessSpec. rotation (α 20/D, 100 g/l, hydrochloric acid 3 mol/l, calc. on dried substance): +33.7 to +36.0Chloride (Cl): ≤ 50 ppmSulfate (SO₄): ≤ 50 ppmAs (Arsenic): ≤ 5 ppmCa (Calcium): ≤ 10 ppmCo (Cobalt): ≤ 5 ppmFe (Iron): ≤ 5 ppmK (Potassium): ≤ 5 ppmMg (Magnesium): ≤ 5 ppmNa (Sodium): ≤ 50 ppmPb (Lead): ≤ 10 ppmZn (Zinc): ≤ 5 ppmNinhydrin-positive substances (LC)(Aspartic acid): ≤ 0.5 %Ninhydrin-positive substances (LC)(any other ninhydrin-positive impurity): ≤ 0.3 %Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.02 %Ninhydrin-positive substances (LC)(total impurities): ≤ 0.8 %Loss on drying (130 °C, 3 h): 10.5 - 12.5 %

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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