LaMotte SMART Spectro Spectrophotometer - Manual (Page 162)

HYDRAZINE
p-DIMETHYLAMINOBENZALDEHYDE METHOD
CODE 3656-01-SC
QUANTITY CONTENTS CODE
2x60 mL *Hydrazine Reagent A *4841-H
10 g *Hydrazine Reagent B Powder *4842-D
1 Pipet, 1.0 mL, plastic 0354
1 Spoon, 0.15 g, plastic 0727
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents
go to www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail,
phone or fax.
Hydrazine, N
2
H
4
, is added to the water in high pressure boilers to reduce corrosion
by acting as an oxygen scavenger.
APPLICATION: Boiler and cooling waters; industrial wastewaters.
RANGE: 0.000–1.000 ppm Hydrazine
MDL: 0.010 ppm
METHOD: p-Dimethylaminobenzaldehyde reacts with hydrazine
under acidic conditions to form a yellow color in
proportion to the amount of hydrazine present.
SAMPLE HANDLING
& PRESERVATION:
Samples should be analyzed as soon as possible after
collection due to the ease with which hydrazine becomes
oxidized. Acidifi cation of the sample may increase the
time between collection and analysis.
INTERFERENCES: The substances normally present in water do not
interfere with the test, with the exception of strong
oxidizing agents.
SMART Spectro Test Procedures 2.11 HYDRAZINE
Test P
rocedures