Main Applications of Demilium Bromide_Kain Industrial Additives

Background and overview^[1]

Demidium bromide can be used in the pharmaceutical and chemical fields. If methyl bromide is inhaled, move the patient to fresh air; if the skin comes into contact, take off contaminated clothing, rinse the skin thoroughly with soap and water, and seek medical treatment if you feel unwell; if the eyes come into contact, seek medical attention. Separate eyelids, rinse with running water or saline, and seek medical attention immediately; if ingested, rinse mouth immediately, do not induce vomiting, and seek medical attention immediately.

Apply^[1-2]

1) Prepare an anionic surfactant in sewage. This detection method uses a quantitatively known concentration of linear alkyl benzene sodium sulfonate standard solution and the same volume of water to be tested under the same conditions, that is, to test the Add the same volume of organic solvent and the same volume of the same concentration of chromium bromide solution to the standard solution of linear alkyl benzene sulfonate sodium of known concentration and the same volume of sewage, and then determine the color of the organic solvent layer to be tested The content of anionic surfactant in the water body. In this method, the chromium bromide solution is a cationic indicator, which can avoid the interference of the cationic substances in the water body to be measured on the color of the organic solvent layer; in addition, the detection method of the present invention is simple to measure and It is short in time, low in toxicity, high in sensitivity and suitable for rapid semi-quantitative determination by enterprises.

2) An analysis for detecting laundry detergent residues in clothing, including the following steps: Dissolve acid blue 1 and bromide in ethanol respectively, mix them to prepare an acidic mixed indicator solution; prepare a hard Aqueous solution; soak the washed clothing in a hard water solution to obtain a soaking solution; prepare a standard solution of anionic surfactant; add an acidic mixed indicator solution to the soaking solution and standard solution respectively; visually compare the color of the soaking solution with the standard The color of the solution can be used to determine the residual anionic surfactant in the soaking solution.

Main reference materials

[1] CN201710203873.6 A method for detecting anionic surfactants in sewage

[2] CN201610596866.2 A simple analysis method for laundry detergent residues in clothing