Volume/Mass of SO2 released from a Sodium Bisulphite Solution?

  • Thread starter Thread starter jus_thom
  • Start date Start date
  • Tags Tags
    Sodium
Click For Summary
SUMMARY

The discussion focuses on determining the ventilation requirements for a Sodium Bisulfite (NaHSO3) storage room to comply with COSHH regulations. It highlights that the oxidation of NaHSO3 in the presence of air produces sulfur dioxide (SO2), contributing to the vapor cloud above the solution. Key data includes a temperature of 293 K, a total vapor pressure of 4 kPa, and a specific SO2 vapor pressure of 0.9 kPa. The solution density is noted as 1280 kg/m3, and the spillage volume is 1 m3, emphasizing the need for professional assessment for accurate ventilation calculations.

PREREQUISITES
  • Understanding of COSHH regulations
  • Knowledge of chemical vapor pressures and densities
  • Familiarity with ventilation design principles
  • Basic concepts of chemical oxidation reactions
NEXT STEPS
  • Research COSHH compliance requirements for chemical storage
  • Learn about vapor pressure calculations for chemical solutions
  • Investigate ventilation systems for hazardous materials
  • Study the chemical properties and safety measures for Sodium Bisulfite
USEFUL FOR

This discussion is beneficial for chemical safety officers, industrial hygienists, and facility managers responsible for the safe storage and handling of hazardous materials like Sodium Bisulfite.

jus_thom
Messages
1
Reaction score
0
The aim is to work out the ventilation requirements for the Sodium Bisulfite (NaHSO3) storage room to ensure COSHH compliance.

From my understanding, the oxidation of NaHSO3 with air results in the formation of SO2.

The vapor cloud above the bisulfite solution is composed of SO2 and H2O.

Available Data
Temperature : 293 K
Vapor Pressure: 4kPa (H2O + SO2)
SO2 Vapor Pressure: 0.9 kPa
Solution Density: 1280 kg/m3
Spillage Volume: 1 m3

Please let me know if any additional info is required.
 
Engineering news on Phys.org
Welcome to PF. This is a question that should be answered by a local professional engineer or industrial hygienist. Just computing dilution of a spill (a big spill!) isn't enough. The physical layout and method for fume extraction in non-spill(notmal) conditions are important too and you can't be assured of getting reliable answers from strangers on the internet. Thread closed.
 
  • Like
Likes   Reactions: berkeman