≥97.0% (calcined substance, KT)

≤3% loss on ignition, 900 °C

As: ≤0.1 mg/kg

Ca: ≤500 mg/kg

Ni: ≤5 mg/kg

Zn: ≤5 mg/kg

Fe: ≤50 mg/kg

Cd: ≤5 mg/kg

Mn: ≤5 mg/kg

Cu: ≤5 mg/kg

Sr: ≤20 mg/kg

Co: ≤5 mg/kg

Li: ≤50 mg/kg

Mo: ≤5 mg/kg

Al: ≤20 mg/kg

K: ≤50 mg/kg

Na: ≤2000 mg/kg

Pb: ≤5 mg/kg

Ba: ≤10 mg/kg

Bi: ≤10 mg/kg

Cr: ≤5 mg/kg

insoluble matter, passes filter test

≤0.002% total nitrogen (N)

chloride (Cl-): ≤100 mg/kg

sulfate (SO42-): ≤10 mg/kg

MgO

0.1 M in 5 M HCl

BioUltra

Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

OM3850000

1

2852 °C(lit.)

5 M HCl: soluble0.1 M at 20 °C, clear, colorless

λ: 280 nm Amax: ≤0.025

λ: 260 nm Amax: ≤0.040