L-ISOLEUCINE (FOR BIOCHEMISTRY)

L-ISOLEUCINE (FOR BIOCHEMISTRY)

Article No.	Grade	Purity	Cas no.	Molecular Formula	Molecular Weight	H.S. Code	Shelf Life
I0114300025	For Biochemistry	99%	73-32-5	C₆H₁₃NO₂	131.18	2922.4990	60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

White powder

Odour

Odorless

Melting Point/ Freezing point [°C]

288 °C

Solubility in water [% weight]

Partially soluble in water

Specifications

Appearance:	White powder
Chloride (Cl):	Max 0.02%
Sulphate (SO4):	Max 0.03%
Heavy metal (as Pb):	Max 0.001%
Iron (Fe):	Max 0.001%
Ammonium (NH4):	Max 0.02%
Assay (by HClO4 titration):	Min 99%
Foreign amino acids:	Max 0.5%
Other ninhydrin positive substances (as glycine):	Max 0.1%
pH (1% solution in CO2 free water):	5.5 - 7.0
Specific optical rotation ([α]20/D; 40 g/L in 250 g/L HCl; on dried substance):	+40 to +43 deg
Specific optical rotation ([α]25/D; 40 g/L in 6M HCl; on dried substance):	+38.9 to +41.8 deg