Molybdate
www.chemetrics.com | 1-800-356-3072
Method
References: G. P. Haight and V. Paragamian, Analytical
Range: 20-200 ppm as Mo
Chemistry, pp. 32, 642 (1960). H. Onishi and E. B.
MDL: 20 ppm / Method: Catechol
Sandell, Photometric Determination of Trace Metals, Cat#
4
th
ed., Part 1, p. 295 (1978).
CHEMets Kit K-6720
Molybdate is used throughout the industrial water
CHEMets Refill, 30 ampoules R-6720
treatment and power generation industries as a
Comparator, Shelf-life 2 years:
20, 40, 60, 80, 100, 120, 140, 160, 200 ppm C-6720
corrosion inhibitor in both open- and closed-loop cool-
Kit comes in a plastic case and contains everything needed to perform
ing water systems. In solution, molybdate anions com-
30 tests: Refill, Comparator, 25 mL sample cup, instructions, and MSDS.
plex with oxidized iron to form a protective film of
molybdate and ferric-oxide. Molybdate is considered
an effective, environmentally acceptable alternative to
Instrumental Kits
chromate treatment. Unlike many other transition ele-
ments, molybdenum exhibits low or even negligible
V-2000 Multi-Analyte Photometer
toxicity.
(See page 12 for instrumental features)
The molybdate test method employs the catechol
chemistry. In a mildly reducing alkaline solution,
Range: 1.0-25.0 ppm as Mo
catechol reacts with hexavalent molybdenum to form
Method: Catechol
a yellow-orange colored chelate in direct proportion Cat#
to the hexavalent molybdenum concentration. Test
Vacu-vials Kit K-6703
results are expressed in ppm (mg/L) molybdenum (Mo). Kit comes in a cardboard box and contains everything needed to perform
30 tests: thirty ampoules, 25 mL sample cup, ampoule blank, instructions,
calibration table, and MSDS.
Vacu-vials Kits require the use of the V-2000 Photometer or a spec-
trophotometer capable of accepting a 13 mm diameter round cell.
Visual Kits
Instrument sold separately.
Range: 0-7 ppm as Mo
MDL: 0.5 ppm / Method: Catechol
Kit Components common to Molybdate
Cat#
Description Cat#
CHEMets Kit K-6701 Sample Cup Pack, 25 mL (6 ea) A-0013
Ampoule Blank Pack (5 ea) A-0023
CHEMets Refill, 30 ampoules R-6702
Comparator, Shelf-life 2 years:
0, 1, 2, 3, 4, 5, 6, 7 ppm C-6701
Instructions are posted on our website.
If no shelf-life is listed for a product, then the shelf-life is at least 2 years.
Kit comes in a plastic case and contains everything needed to perform
30 tests: Refill, Comparator, 25 mL sample cup, instructions, and MSDS.
Range: 2-24 ppm as Mo
MDL: 2 ppm / Method: Catechol
Cat#
CHEMets Kit K-6702
CHEMets Refill, 30 ampoules R-6702
Comparator, Shelf-life 2 years:
2, 4, 6, 8, 10, 12, 16, 20, 24 ppm C-6702
Kit comes in a plastic case and contains everything needed to perform
30 tests: Refill, Comparator, 25 mL sample cup, instructions, and MSDS.
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