กระดาษทดสอบ Reducing agents, SO2, (Potassium iodate starch paper)

Potassium iodate starch paper

Quick and easy determination of sulphit and sulphur dioxide

The test paper allows the rapid detection of sulphit and sulphur dioxide. The paper is used in food analyzing laboratories. The reaction is as follows:
2 IO3– + 5 SO32– + 2 H+ → 5 SO42– + I2 + H2O
Sulphurous acid or sulphites reduce potassium iodate to free iodine. With starch, iodine gives a characteristic blue-black color. For a detection of sulphite with high sensitivity we recommend Sulfit Test paper (REF 90763).

Product data and ordering information

Type Qualitative test paper
Presentation Reel of 5 m length and 7 mm width
Color reaction
white → blue-black
Limit of sensitivity 5 mg/l SO2
REF  90753