Solumetrics - Potassium Dihydrogen orthophospahte AR

Code: PDHO

CAS:7778-77-0

Date: 03/03/10

Description: Potassium DiHydrogen Orthophosphate AR

Issue No: 1

Test No:

Description:

Specification:

Method No:

1

Assay

99.5% min

PDHO/1

2

Max absorbance/min transmittance 1 cm cell v HPLC water @ 254 NM

005 AU/89%

PDHO/2

3

Loss on drying

0.05% max

PDHO/3

4

Reaction (5% Soln)

pH 4.3 – 4.4

PDHO/4

5

Calcium

0.005% max

PDHO/5

6

Copper

5 ppm max

PDHO/6

7

Iron

5ppm max

PDHO/7

8

Lead

5 ppm max

PDHO/8

9

Magnesium

0.002% max

PDHO/9

10

Sodium

0.02% max

PDHO/10

11

Zinc

0.001%

PDHO/11

12

Total Chloride

5 ppm max

PDHO/12

13

Total Nitrogen

0.002% max

PDHO/13

14

Total Silicon

0.005% max

PDHO/14

15

Total Sulfur

0.01% max

PDHO/15

Age limitations: Re-test after 2 years.

Additional requirements: Certificate of analysis with each batch/ delivery.

Testing: To the above specification.

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