Identification+of+Rhodamine-B



**SIMPLE ANALYSIS TECHNIQUE**

Babu & Indushekhar S (1990) from NIN Hyderabad India, have reported the results of his research, that the detection of synthetic dyes can be done simply by using simple tools, such as glass, water and filter paper. So that does not provide any solvents or require the availability of special equipment. This method can be done at home or in the field. Privileges or advantages of these methods is important because the way the analysis does not require the availability of dye-dye any standard.



 The idea of this simple method is based on the ability of different textile dyes by synthetic food dyes, such as solubility in water resources differently. Textile dyes such as Rhodamin B (red), Methanil Yellow (yellow), and Malachite Green (green), are not easily soluble in water. In Table 1, we can see a list of some synthetic dyes soluble and not soluble in water.  While working principle is kromatograph paper with solvent water (PAM, destilata, or water wells). After the dye dripped on the paper seepage (elution), water from below will be able to drag dye substances that dissolve in water (substance food colouring) farther than the textile dyes.

 The workings of this analysis is to dissolve a substance suspected of dye into the water destilata, in order to get concentrations of 1.0 mg / ml or 1 g / l, then the solution dropwise (spot) at 2 cm from the tip of filter paper measuring 20x20 cm. Furthermore, filter paper is inserted into a glass that has been filled with water to taste (1 to 1.5 cm from the basar placed glass). Water will be sucked by capillary or seeping upward, and the water allowed to seep up to 3 / 4 tall glasses. Filter paper is removed and dried in air. After drying, the paper folded in half and folded again into three such seemingly in Figure 1, so there are 8 sections between the original spot and limit solvent. The entire analysis can be completed less than 1.5 hours. The result is practical textile dye does not move out of place.

