精氨酸-天门冬氨酸

item

standard

analysis data

appearance

white or almostcrystalline                powder

conforms

specific rotation[α]20/d

(c=8 in 6n hcl)

+25°to +27°

25.5°

chloride (cl)

not more than 0.05%

0.016%

sulfate (so4)

not more than 0.03%

0.013%

heavy metal(pb)

not more than 20ppm

6ppm

ammonium(nh4)

not more than 0.02%

<0.02%

loss on drying

not more than 3.0%

0.5%

residue onignition(sulfated)

not more than 0.1%

0.08%

assay

98.5% to 101.0%

99.2%

ph

5.5 to7.0

 6.3

total plate count

<1000cfu / g

conforms

yeast&molds

<100cfu / g

conforms

salmonella

absent/10g

conforms

e.coli

absent/10g

negative

s.aureus

absent/10g

negative