- 101566
1.01566
L-Asparagine monohydrate
for biochemistry
Recommended Products
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 | 1.01565 | 1043513 | Y0000305 |
|---|---|---|---|
| form solid | form solid | form - | form - |
| mp 215-217 °C (decomposes) | mp 215-217 °C (decomposes) | mp 233-235 °C (lit.) | mp 233-235 °C (lit.) |
| solubility 22 g/L | solubility 22 g/L | solubility - | solubility - |
| storage temp. 2-30°C | storage temp. 2-30°C | storage temp. - | storage temp. 2-8°C |
| Quality Level 100 | Quality Level 500 | Quality Level - | Quality Level - |
| pH 4.0-5.5 (20 °C, 20 g/L in H2O) | pH 4.0-5.5 (20 °C, 20 g/L in H2O) | pH - | pH - |
Analysis Note
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 Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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