氢氧化钠

性质
vapor density >1 (vs air)
vapor pressure <18 mmHg ( 20 °C)
  3 mmHg ( 37 °C)
grade puriss.
assay 98-100.5%
form pellets
quality meets analytical specification of Ph. Eur., BP, NF, E524
total impurities ≤0.0005% total nitrogen (N)
  ≤0.002% heavy metals (as Pb)
  ≤0.5% Na2CO3
mp 318 °C(lit.)
anion traces chloride (Cl-): ≤20 mg/kg
  phosphate (PO43-): ≤10 mg/kg
  silicate (as SiO2): ≤100 mg/kg
  sulfate (SO42-): ≤30 mg/kg
cation traces Al: ≤10 mg/kg
  As: ≤2 mg/kg
  Ca: ≤10 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  K: ≤1000 mg/kg
  Pb: ≤0.5 mg/kg

安全性
Personal Protective Equipment Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Hazard Codes C
Risk Statements 35
Safety Statements 26-37/39-45
RIDADR UN 1823 8/PG 2
WGK Germany 1
RTECS WB4900000