105 hPa ( 20 °C)
200
viscous liquid
64-66% (acidimetric, free SO3)
≤0.02%
clear to turbid colorless to brownish
<1 (20 °C, 100 g/L in H2O)
64 °C/1013 hPa
1 °C
1.99 g/cm3 at 20 °C
2-30°C
1S/H2O4S.O3S/c1-5(2,3)4;1-4(2)3/h(H2,1,2,3,4);
HIFJUMGIHIZEPX-UHFFFAOYSA-N
Danger
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1 - STOT SE 3
Respiratory system
6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials