Hydrazine Hydrate

Boiler Chemicals-42

Hydrazine Hydrate

Part No. RXSOL-42-1541-030

No oxygen is entering the boiler with the feed water when hydrazine is present in the water ( This will help to decrease oxygen on HP, LP boiler )

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Key details

Part number RXSOL-42-1541-030
Standard packing 30.00 Kg
Supply locations Hydrazine Hydrate supplier in Mumbai, Kolkata, Gandhidham, Chennai, Visakhapatnam, Fujairah, Dubai, Sharjah. Hydrazine Hydrate plays very important role for corrosion protection in boilers water treatment.

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Application

<p style="text-align: justify;">
Hydrazine is used as an oxygen scavenger for high pressure boilers in power plants and other industries to reduce corrosion of metal pipes and fittings. The test for hydrazine can be controlled by http://rxmarine.com/hydrazine-test-kit in which several solutions have been formulated into a single, stable reagent. The method is both sensitive and easy to perform. It is used mostly for the determination of small amounts of hydrazine in boiler feedwater. There are no common interferences.</p>
<p style="text-align: justify;">
<span style="font-size:14px;">The establishment of protective metal oxide layers through the use of reducing agents (such as hydrazine, hydroquinone, and other oxygen scavengers) is known as metal passivation or metal conditioning. Although "metal passivation" refers to the direct reaction of the compound with the metal oxide and "metal conditioning" more broadly refers to the promotion of a protective surface, the two terms are frequently used interchangeably.</span></p>
<p style="text-align: justify;">
The reaction of hydrazine and hydroquinone, which leads to the passivation of iron-based metals, proceeds according to the following reactions:</p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
N<sub>2</sub>H<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+ </td>
<td align="center" style="margin: 0px;" width="11%">
6Fe<sub>2</sub>O<sub>3</sub></td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
4Fe<sub>3</sub>O<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+ </td>
<td align="center" style="margin: 0px;" width="11%">
2H<sub>2</sub>O </td>
<td align="center" style="margin: 0px;" width="11%">
+ </td>
<td align="center" style="margin: 0px;" width="12%">
N<sub>2</sub></td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydrazine </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
hematite </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
magnetite </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
water </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
nitrogen</td>
</tr>
</tbody>
</table>
<p>
 </p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>4</sub>(OH)<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
3Fe<sub>2</sub>O<sub>3</sub></td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
2Fe<sub>3</sub>O<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>4</sub>O<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="12%">
H<sub>2</sub>O</td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydroquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
hematite</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
magnetite</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
benzoquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
water</td>
</tr>
</tbody>
</table>
<p>
 </p>
<p style="font-family: Arial, Helvetica, san-serif; padding: 0px; margin: 0px 0px 10px 5px; display: inline-block; color: rgb(102, 102, 102); text-align: center;">
Similar reactions occur with copper-based metals:</p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
N<sub>2</sub>H<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
4CuO</td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
2Cu<sub>2</sub>O</td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
2H<sub>2</sub>O</td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="12%">
N<sub>2</sub></td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydrazine</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cupric oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cuprous oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
water</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
nitrogen</td>
</tr>
</tbody>
</table>
<p>
 </p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>6</sub>O<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
2CuO</td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
Cu<sub>2</sub>O</td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>4</sub>O<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="12%">
H<sub>2</sub>O</td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydroquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cupric oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cuprous oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
benzoquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
water</td>
</tr>
</tbody>
</table>
<p>
 </p>
<p style="text-align: justify;">
Magnetite and cuprous oxide form protective films on the metal surface. Because these oxides are formed under reducing conditions, removal of the dissolved oxygen from boiler feedwater and condensate promotes their formation. The effective application of oxygen scavengers indirectly leads to passivated metal surfaces and less metal oxide transport to the boiler whether or not the scavenger reacts directly with the metal surface.</p>
<p style="text-align: justify;">
<a>A significant reduction in feedwater oxygen and metal oxides can occur with proper application of oxygen scavengers.</a></p>

Using Procedure

<p style="text-align: justify;">
The establishment of protective metal oxide lay-ers through the use of reducing agents (such as hydrazine, hydroquinone, and other oxygen scavengers) is known as metal passivation or metal conditioning. Although "metal passivation" refers to the direct reaction of the compound with the metal oxide and "metal conditioning" more broadly refers to the promotion of a protective surface, the two terms are frequently used interchangeably.</p>
<p style="text-align: justify;">
The reaction of hydrazine and hydroquinone, which leads to the passivation of iron-based metals, proceeds according to the following reactions:</p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
N<sub>2</sub>H<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+ </td>
<td align="center" style="margin: 0px;" width="11%">
6Fe<sub>2</sub>O<sub>3</sub></td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
4Fe<sub>3</sub>O<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+ </td>
<td align="center" style="margin: 0px;" width="11%">
2H<sub>2</sub>O </td>
<td align="center" style="margin: 0px;" width="11%">
+ </td>
<td align="center" style="margin: 0px;" width="12%">
N<sub>2</sub></td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydrazine </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
hematite </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
magnetite </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
water </td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
nitrogen</td>
</tr>
</tbody>
</table>
<p>
 </p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>4</sub>(OH)<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
3Fe<sub>2</sub>O<sub>3</sub></td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
2Fe<sub>3</sub>O<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>4</sub>O<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="12%">
H<sub>2</sub>O</td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydroquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
hematite</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
magnetite</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
benzoquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
water</td>
</tr>
</tbody>
</table>
<p>
 </p>
<p style="font-family: Arial, Helvetica, san-serif; padding: 0px; margin: 0px 0px 10px 5px; display: inline-block; color: rgb(102, 102, 102); text-align: center;">
Similar reactions occur with copper-based metals:</p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
N<sub>2</sub>H<sub>4</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
4CuO</td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
2Cu<sub>2</sub>O</td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
2H<sub>2</sub>O</td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="12%">
N<sub>2</sub></td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydrazine</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cupric oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cuprous oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
water</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
nitrogen</td>
</tr>
</tbody>
</table>
<p>
 </p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="79%">
<tbody>
<tr>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>6</sub>O<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
2CuO</td>
<td align="center" style="margin: 0px;" width="11%">
<font face="Symbol">®</font></td>
<td align="center" style="margin: 0px;" width="11%">
Cu<sub>2</sub>O</td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="11%">
C<sub>6</sub>H<sub>4</sub>O<sub>2</sub></td>
<td align="center" style="margin: 0px;" width="11%">
+</td>
<td align="center" style="margin: 0px;" width="12%">
H<sub>2</sub>O</td>
</tr>
<tr>
<td align="center" style="margin: 0px;" width="11%">
hydroquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cupric oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
cuprous oxide</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="11%">
benzoquinone</td>
<td align="center" style="margin: 0px;" width="11%">
 </td>
<td align="center" style="margin: 0px;" width="12%">
water</td>
</tr>
</tbody>
</table>
<p>
 </p>
<p style="text-align: justify;">
Magnetite and cuprous oxide form protective films on the metal surface. Because these oxides are formed under reducing conditions, removal of the dissolved oxygen from boiler feedwater and condensate promotes their formation. The effective application of oxygen scavengers indirectly leads to passivated metal surfaces and less metal oxide transport to the boiler whether or not the scavenger reacts directly with the metal surface.</p>
<p style="text-align: justify;">
<a>A significant reduction in feedwater oxygen and metal oxides can occur with proper application of oxygen scavengers.</a></p>

Technical Specifications

<p class="blackTen" style="font-family: Tahoma; font-size: 12.8000001907349px;">
Physical properties </p>
<table style="font-family: Tahoma;" summary="" width="85%">
<tbody>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top" width="35%">
Molecular formula:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
H<sub>2</sub>NNH<sub>2</sub></td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
CAS No.:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
000302012</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Molecular weight:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
32.05</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Description:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
colorless, oily liquid, fuming in air.</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Odor:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
penetrating odor resembling that of ammonia</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Density:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
1.0036 (25/4°C)</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Boiling point:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
113.5°C (at 760 mm Hg)</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Freezing point:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
1.4 - 1.5°C</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Explosive limits:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
4.7 - 100% by volume in air</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Flash point:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
38 - 52°C (open cup)</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Saturation concentration:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
18900 ppm</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Conversion factors:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
1 ppm = 1.31 mg/m<sup>3</sup></td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
(at 760 mm and 25°C)</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
1 mg/m<sup>3</sup> = 0.76 ppm</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Solubility:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
soluble in water, ethanol, and isobutanol; insoluble in chloroform and ether</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Vapor density:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
1.04 (air = 1)</td>
</tr>
<tr>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
Vapor pressure:</td>
<td class="blackTen" style="font-size: 12.8000001907349px; color: rgb(0, 0, 0);" valign="top">
14.4 mm Hg at 25°C<br />
 </td>
</tr>
</tbody>
</table>
<p>
<br type="_moz" />
<br />
 </p>

Remarks

<p style="text-align: justify;">
<span style="font-family: arial, sans-serif; font-size: small;">Hydrazine is used as an oxygen scavenger for high pressure boilers in power plants and other industries to reduce corrosion of metal pipes and fittings. Hydrazine Test Method, in which several solutions have been formulated as a Hydrazine Reagent. The method is both sensitive and easy to perform. It is used mostly for the determination of small amounts of hydrazine in boiler feedwater. </span></p>

Note

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Why control balance of Hydrazine must required ?<br />
Control of Hydarazine level in Boiler water is very important.  As proper level maintenance protect metal machinery parts from corrosion, <span style="font-family: FranklinGothic; font-size: 11pt;">However, precautions must be </span><span style="font-size: 11pt; font-family: FranklinGothic;">taken to prevent <em><span style="font-size:16px;">excess dose of hydrazine chemical as excess hydrazine will begin to decompose at temperature above 200</span></em></span><em><span style="font-size:16px;"><span style="font-family: FranklinGothic; vertical-align: 4pt;">o</span></span></em><span style="font-size: 11pt; font-family: FranklinGothic;"><em><span style="font-size:16px;">C to form Ammonia</span></em>.</span></p>
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<span style="font-size: 11pt; font-family: FranklinGothic;">Hydrazine is one of popular an alternative Oxygen Scavenger. It is very important to protect </span><span style="font-family: FranklinGothic; font-size: 15px;">boiler components from </span><span style="font-family: FranklinGothic; font-size: 11pt;">feed boiler water corrosion. </span><br />
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<span style="text-align: justify;">Test Procedure ::: <a href="http://rxmarine.com/hydrazine-test-kit">rxmarine.com/hydrazine-test-kit…;

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