L-Leucine CAS：61-90-5 CAS NO.61-90-5

Product Details

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product name:	l-leucine
synonyms:	(s)-2-amino-4-methylvalericacid;1-leucine;2-amino-4-methylpentanoic acid;2-amino-4-methylpentanoicacid;2-amino-4-methyl-valericaci;4-methyl-l-norvalin;4-methyl-norvalin;alpha-amino-gamma-methylvaleric acid
cas:	61-90-5
mf:	c6h13no2
mw:	131.17
einecs:	200-522-0
product categories:	food and feed additive;amino acid derivatives;leucine [leu, l];amino acids;amino acids and derivatives;alpha-amino acids;biochemistry;nutritional supplements;l-amino acids;amino acids;amino
mol file:	61-90-5.mol

l-leucine chemical properties

melting point	>300 °c(lit.)
alpha	15.4 º (c=4, 6n hcl)
density	1,293 g/cm³
fema	3297
fp	145-148°c
storage temp.	store at rt.
solubility	1 m hcl: 50 mg/ml
form	powder
water solubility	22.4 g/l (20 c)
sublimation	145-148 ºc
merck	14,5451
brn	1721722
stability:	stability moisture and light sensitive. incompatible with strong oxidising agents.
cas database reference	61-90-5(cas database reference)

item	limit	result
description	white crystals or crystals powder	white crystals powder
identification	infrared absorption	conforms
specific rotation[a]_d²⁰^°	+14.9°～+17.3°	+15.8°
state of solution	≥98.0%	≥98.6%
chloride(cl)	≤0.050%	0.030%
sulfate(so4)	≤0.030%	0.015%
iron(fe)	≤30ppm	10ppm
heavy metals(pb)	≤15ppm	5ppm
lead (pb)	≤5ppm	0.3ppm
arsenic(as2o3)	≤1ppm	0.2ppm
other amino acids	conforms	conforms
organic volatile impurities	meets the requirements	conforms
residual solvents	meets the requirements	conforms
loss on drying	≤0.20%	0.10%
residue on ignition (sulfated)	≤0.10%	0.05%
solubility in water	meets the requirements	conforms
assay	98.5～101.5%	99.5%
ph	5.5～6.5	5.60
conclusion	qualified (usp32)