GB 1886.9-2016 Translated English of Chinese Standard (GB 1886.9-2016, GB1886.9-2016): Food additive -- Hydrochloric acid [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]This document is applicable to the food additive hydrochloric acid synthesized by chlorine and hydrogen and absorbed by water. |
Common terms and phrases
1000mL volumetric flask 10mL of hydrochloric 50mL of water 50mL volumetric flask according to formula accurate to 0.01g Add 1mL adjust the zero ammonia Analysis steps arithmetic mean Arsenic trioxide blank solution Blank test bromocresol green buffer solution calculation The mass conical flask curve or calculate equipment General laboratory Erlenmeyer flask evaporating dish exact same analytical Figure A.1 Food additive GB/T glycerol-ethanol mixture grams g hydrochloric acid solution hydroxide standard titration Instruments and equipment Iron standard solution Let stand mass fraction Measure 1mL Measure the absorbance Methyl orange molar mass parallel determination results potassium iodide solution pyridine reaction formula reagents and dosage Reagents and materials Result calculation sodium hydroxide standard sodium thiosulfate solution and 2mL solution to adjust specimen to carry spectrophotometer stand for 15min Standard curve drawing standard titration solution stannous chloride Starch indicator solution suitable cuvette sulfuric acid Take the arithmetic water to dilute wavelength of 450nm Weigh accurate