Determination Of CO2 In Hydrazine
PRINCIPLES OF OPERATION AND TYPICAL USE
A hydrazine sample is acidified with phosphoric acid (H3PO4) in the reaction chamber. A carbon dioxidefree carrier gas sweeps the evolved CO2 from the reaction tube through a scrubbing solution and into the CO2 Coulometer where it is automatically measured by coulometric titration.
- Acid solution, 1:1 H3PO4.
- Scrubbing solution, 20% AgNO3 with 3% H2O2 adjusted to pH 2.
- Carrier gas scrubber, 45% KOH.
- Coulometer cell reagents (supplied with instrument).
- Assemble and prepare the components for operation as described in the Instruction Manuals.
- Determine the blank and run a standard to confirm proper operation of the complete system.
- Inject one (1) ml of sample through the septum and wash it into the reaction chamber with 10ml of acid.
- Begin the analysis by pressing “Start Analysis” on the CM5017 CO2 Coulometer.
- When all of the CO2 is evolved and titrated, the CM5017 automatically detects the endpoint, ends the analysis and prints the result to the printer and/or USB Flash Drive. *
(*) – Endpoint determination and result calculations are performed automatically based on user selectable settings entered into the CM5017 CO2 Coulometer.
The overall accuracy of this analysis is +/-0.5% with a typical analysis time of 5 minutes.
- Hydrazine is EXTREMELY CORROSIVE!! Protective clothing and eye wear should be worn to prevent skin contact.
- Hydrazine rapidly absorbs CO2 from the atmosphere and this must be avoided during sample handling to obtain reliable results.