Merck
All Photos(1)

1.08411

Millipore

L-Threonine

for biochemistry

Synonym(s):
Thr, 2-Amino-3-hydroxybutanoic acid, L-Threonine
Empirical Formula (Hill Notation):
C4H9NO3
CAS Number:
Molecular Weight:
119.12
MDL number:
EC Index Number:
200-774-1

Quality Level

form

solid

pH

5-6 (20 °C, 100 g/L in H2O)

mp

265-270 °C

solubility

90 g/L

bulk density

370 kg/m3

storage temp.

2-30°C

InChI

1S/C4H9NO3/c1-2(6)3(5)4(7)8/h2-3,6H,5H2,1H3,(H,7,8)

InChI key

AYFVYJQAPQTCCC-UHFFFAOYSA-N

Analysis Note

Assay (perchloric acid titration): ≥ 99.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, fine powder
Appearance of solution (1 mol/l, water): clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l): -15.4 to -16.4
Heavy metals (as Pb): ≤ 0.001 %
NH₄ (Ammonium): ≤ 0.01 %
Foreign amino acids: ≤ 0.3 %
Other ninhydrine positive substances: ≤ 0.1 %

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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