No oxygen is entering the boiler with the feed water when hydrazine is present in the water.
The objective is to maintain a hydrazine residual between 0.05-0.2 ppm depending on operating pressure and boiler designe. Actual consumption is determined under operating conditions. A normal dosage is approximately 1 ltr. per day, depending of system layout.
Hydrazine is a convenient reductant because the by-products are typically nitrogen gas and water. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems.
Hydrazine is mainly used as a foaming agent in preparing polymer foams.
No oxygen is entering the boiler with the feed water when hydrazine is present in the water.
Technical Bulletin
Technical Data Sheet
| molecular formula: | H2NNH2 |
| CAS No.: | 000302012 |
| molecular weight: | 32.05 |
| description: | colorless, oily liquid, fuming in air. |
| odor: | penetrating odor resembling that of ammonia |
| density: | 1.0036 (25/4°C) |
| Boiling point: | 113.5°C (at 760 mm Hg) |
| Freezing point: | 1.4 – 1.5°C |
| explosive limits: | 4.7 – 100% by volume in air |
| flash point: | 38 – 52°C (open cup) |
| saturation concentration: | 18900 ppm |
| conversion factors: | 1 ppm = 1.31 mg/m3 |
| (at 760 mm and 25°C) | 1 mg/m3 = 0.76 ppm |
| solubility: | soluble in water, ethanol, and isobutanol; insoluble in chloroform and ether |
| vapor density: | 1.04 (air = 1) |
| vapor pressure: |
14.4 mm Hg at 25°C |
|
HYDRAZINE HYDRATE |
|
|
Test |
Results |
|
Appearance |
Colourless and clear |
|
Sulfate : as SO4 |
0.0001% max. |
|
Chloride : as Cl |
0.0001% max. |
|
Iron : as Fe |
0.00005% max. |
|
Heavy metals : as Pb |
0.0001% max. |
|
Non volatile matter |
0.005% max. |
|
Assay : N2H4H2O (as N2H4) |
80.19% (51.32%) |
Product Label
Hydrazine is a convenient reductant because the by-products are typically nitrogen gas and water. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems.
Hydrazine is mainly used as a foaming agent in preparing polymer foams.
No oxygen is entering the boiler with the feed water when hydrazine is present in the water.
