dl-valine 516-06-3

payment method: t/t
product name: dl-val cas#: 516-06-3
synonyms: dl-valine molecular formula: c5h11no2
molecular weight: 117.15

specifications: (reference standard: aji92)
item
standard
analysis data

appearance
white powder
conforms

state of solution
(transmittance)
not less than 95.0%
98.5%

chloride (cl)
not more than0.04%
0.008%

melting point
298±3
299

conductance
not more than18μm /cm
11μm/cm

heavy metal(pb)
not more than 10ppm
8ppm

arsenic(as2o3)
not more than 2ppm
<1ppm

sulfate(so4)
not more than 0.02%
0.005%

cadmium(cd)
not more than 1ppm
conforms

mercury(hg)
not more than 3ppm
conforms

nickel(ni)
not more than 1ppm
conforms

antimony(sb)
not more than 10ppm
conforms

iron(fe)
not more than 10ppm
9ppm

loss on drying
not more than 0.20%
0.18%

residue on ignition (sulfated)
not

516-06-3