BP98

Item

Index

Content%

99.5-101.0

Ca ≤%

0.02

Heavy metals(Pb) ≤%

0.001

Chloride (Cl) ≤%

0.01

Sulphate (SO₄) ≤%

0.015

Oxalate (C₂O₄) ≤%

0.035

Loss on drying ≤%

0.2

US FCC(IV)

Item

Index

Content %=

99.7

Arsenic (As) % ≤

0.0003

Heavy metals(Pb) % ≤

0.001

Loss on drying ≤%

0.5

Oxalate(C₂O₄)

Qualified

Residue on ignition % ≤

0.05

Sulphate(SO₄)

Qualified

GB15358-94

Item

Index

monohydrate

anhydrous

Content %=

99.5

99.5

Melting point

200 -206°C

200 -260°C

Sulphate(SO₄) % ≤

0.04

0.04

Heavy metals (Pb) % ≤

0.001

0.001

Arsenic (As)% ≤

0.0002

0.0002

Oxidable matter

Passed

Passed

Loss on drying % ≤

11.5

0.5

Residue on ignition % ≤

0.10

0.10