Empirical formula:

C₁₀H₁₂N₅O₈PNa₂

Molecular weight:

407.19

CAS No:

5550-12-9

Description:

White crystalline powder

Loss on drying(120℃/5h):

Not more than 25%

UV spectrum(Abs. max at 252nm, ε=13700±2%, pH2.0)

A250/A260

1.13-1.19

A280/A260

0.64-0.68

Assay(UV spectrophotom. Calc.on dry basis):

Not less than 97.0%

HPLC

Conforms to standard, other nucleotides not detected

Heavy metals(as Pb):

Not more than 10mg/Kg

As:

Not more than 2mg/Kg

Transmission(430nm, c=1%, in H₂O):

Not less than 95.0%

Microbiological Requirements

Bacterial count:

Not more than 1000CFU/g

Yeast and molds:

Not more than 10CFU/g

Coliform germs:

Negative for 1g

Staphylococcus:

Negative for 1g

Salmonella:

Negative for 1g

Storage/Stability:

Stable at room temperature, when stored in tightly closed containers, protected from light and humidity