LaMotte SMART 2 - Manual (Page 71)

BENZOTRIAZOLE/TOLYLTRIAZOLE
UV Photolysis Method • CODE 4047
QUANTITY CONTENTS CODE
15 g *Benzotriazole Reagent *3818-E
25 mL Potassium Sodium Tartrate Solution 7841WT-G
25 mL *Sulfuric Acid *6139WT-G
1 pH Test Papers, 1–11 2956
1 Spoon, 0.25 g, plastic 0695
1 Erlenmeyer Flask, 25 mL, glass 2-2109
1 Graduated Cylinder, 25 mL, glass 0417
*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.
Equipment needed but not supplied:
QUANTITY CONTENTS CODE
1 UV Shielding Goggles 31041
1 Pen-Ray UV Lamp 31041-1
1 Pen-Ray Lamp Power Source 31041-2
Proper safety precautions must be followed when using the Pen-Ray UV lamp
and power source (31041-1 and 31041-2) to prevent eye and skin damage.
Always wear the UV Shielding Goggles (31041) while the lamp is turned on.
Never handle the lamp itself; always hold it by the socket. Wipe the lamp dry
with a clean, soft tissue after each test. Do not operate the lamp outside the
Erlenmeyer Flask filled with water.
Benzotriazole and tolyltriazole form strong complexes with metals. They are
used in antifreeze for cars, lubricating oil, and photographic anti-fogging
agents. In cooling water systems benzotriazole and tolyltriazole are used as
corrosion and rust inhibitors together with many kinds of scale inhibitors,
bactericides and algaecides.
APPLICATION: Corrosion and rust inhibitors in cooling water systems
RANGE: 0.0 – 30.0 ppm Benzotriazole
0.0 – 30.0 ppm Tolyltriazole
METHOD: Benzotriazole and tolyltriazole are UV-photolyzed in a
buffered solution with a pH between 4 and 6. A yellow color
develops in proportion to the concentration of triazole
present.
Smart2 TEST PROCEDURES 4.08 Benzotriazole/Tolyltriazole 1/4