2 comments. 1  If they are metal chairs, be sure to sure a Rustolium paint. If they are wicker or plastic, just read the label on the paint. 2  And I would suggest one more thing: a good cleaning before painting. Either with a pressure washer or something to make sure the new paint sticks.
Dextrins are white, yellow, or brown powders that are partially or fully water-soluble, yielding optically active solutions of low viscosity. Most of them can be detected with iodine solution, giving a red coloration; one distinguishes erythrodextrin (dextrin that colours red) and achrodextrin (giving no colour).
Dextrins was made by moistening dried starch with dilute mixture of acid (HCl) and nitric acids (HNO3), the mixture was spread in a corrugated iron sheets and exposed to the heat of a bakers oven until they were thoroughly dried and slightly yellow.