DPD Tablet

for Residual Chlorine Analysis

Manufacturer :: FUJIFILM Wako Pure Chemical Corporation

Storage Condition :: Keep at RT.

CAS RN^® :: 6283-63-2

Structural Formula
Label
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SDS

Comparison	Product Number	Package Size	Price	Availability	Certificate of Analysis	Purchase
	Distributor 048-28381 Barcode No 4987481408715	100tab	List Price 76.00 USD	In stock in Japan	Certificate of Analysis	Distributor

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Overview / Applications
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Manufacturer Information
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Product Specification Sheet

Package Insert

100tab

Spectral Data

Certificate of Analysis

100tab

Calibration Certificate

Analytical Charts

Overview / Applications

Outline	This product is used in the measurement of residual chlorine in drinking water, water in swimming pools, etc. One tablet of this product is dissolved in 5 mL of a water sample, and the pink color developed when the DPD reagent is oxidized to semiquinone is measured by colorimetry or absorption photometry. Chlorine agents are used for sterilization and disinfection of drinking water and water in swimming pools. Chlorine agents exhibit disinfection activity as a hypochlorous acid in water, but the concentration is lowered by reaction with suspended solids, organic matters and metal salts in water and scattering in the atmosphere, and, consequently, the action potential is deteriorated gradually. Therefore, it is essential to measure residual chlorine in water in the aspect of hygienic control. At present, residual chlorine is measured mainly by the o-tolidine method, but o-tolidine was to be removed from the official methods on April 1, 2002, after its carciogenicity was pointed out. The DPD method is one of the alternatives.The DPD method determines residual chlorine by comparing the pink to pink-red color developed by the reaction of residual chlorine with ethyl-p-phenylene diamine (DPD) with the matching fluids for color.This product is a tablet for simple measurement of residual chlorine based on the DPD method mentioned in the Test Methods for Drinking Water. N,N-diethyl-p-phenylene diamine sulfate and anhydrous sodium sulfate are contained in the weight ratio of 1:24, and one tablet of the product is dissolved in 5 mL of a test water.

Outline

This product is used in the measurement of residual chlorine in drinking water, water in swimming pools, etc. One tablet of this product is dissolved in 5 mL of a water sample, and the pink color developed when the DPD reagent is oxidized to semiquinone is measured by colorimetry or absorption photometry.
Chlorine agents are used for sterilization and disinfection of drinking water and water in swimming pools. Chlorine agents exhibit disinfection activity as a hypochlorous acid in water, but the concentration is lowered by reaction with suspended solids, organic matters and metal salts in water and scattering in the atmosphere, and, consequently, the action potential is deteriorated gradually. Therefore, it is essential to measure residual chlorine in water in the aspect of hygienic control. At present, residual chlorine is measured mainly by the o-tolidine method, but o-tolidine was to be removed from the official methods on April 1, 2002, after its carciogenicity was pointed out. The DPD method is one of the alternatives.The DPD method determines residual chlorine by comparing the pink to pink-red color developed by the reaction of residual chlorine with ethyl-p-phenylene diamine (DPD) with the matching fluids for color.This product is a tablet for simple measurement of residual chlorine based on the DPD method mentioned in the Test Methods for Drinking Water. N,N-diethyl-p-phenylene diamine sulfate and anhydrous sodium sulfate are contained in the weight ratio of 1:24, and one tablet of the product is dissolved in 5 mL of a test water.

Property

Appearance	White tablet

Manufacturer Information

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Same CAS list

For research use or further manufacturing use only. Not for use in diagnostic procedures.

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