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1.01566

Millipore

L-Asparagine monohydrate

for biochemistry

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Synonym(s):
L-Asparagine monohydrate, Asparaginic acid semiamide, Asn
Empirical Formula (Hill Notation):
C4H8N2O3 · xH2O
CAS Number:
Molecular Weight:
132.12 (anhydrous basis)
MDL number:
EC Index Number:
200-735-9

Quality Level

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

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This Item
A7094Y0000305PHR2350
vibrant-m

1.01566

L-Asparagine monohydrate

-
vibrant-m

A7094

L-Asparagine monohydrate

Essential+ Grade
vibrant-m

Y0000305

Asparagine monohydrate

-
vibrant-m

PHR2350

Asparagine Monohydrate

-
storage temp.

2-30°C

storage temp.

room temp

storage temp.

2-8°C

storage temp.

2-30°C

Quality Level

100

Quality Level

300

Quality Level

-

Quality Level

300

mp

215-217 °C (decomposes)

mp

233-235 °C (lit.)

mp

233-235 °C (lit.)

mp

-

solubility

22 g/L

solubility

H2O: 20 mg/mL

solubility

-

solubility

-

pH

4.0-5.5 (20 °C, 20 g/L in H2O)

pH

-

pH

-

pH

-

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 %
Identity (IR-spectrum): passes test
Identity (specific rotation): passes test
Appearance: white to almost white crystalline powder or colorless crystals
Appearance of solution (20 g/l, CO₂-free water): clear and colorless
Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 3 mol/l, calc. on dried substance): +33.7 to +36.0
Chloride (Cl): ≤ 200 ppm
Sulfate (SO₄): ≤ 200 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
Pb (Lead): ≤ 10 ppm
Zn (Zinc): ≤ 5 ppm
Ninhydrin-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

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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