The document discusses quality control testing for glycerin manufacturing. It outlines tests to check the purity and quality of glycerin, including checks for concentration, color, sulfated ash, chlorides, chlorinated compounds, fatty acids and esters, butanetriols, and lead content. The purpose is to identify high quality glycerin through various analyses and ensure glycerin and products containing glycerin meet standards.

1. Quality
Control
NOVEMBER 30
Authored by: Mujeeb UR Rahman
Roll No. 17CH106
Email: 17CH106@students.muet.edu.pk
Mehran University of Engineering & Technology
Jamshoro, Pakistan
Submitted to: Pro. Dr. Muhammad Shuaib Shaikh
Associate Professor

2. 1
Quality Control in Glycerinmanufacturing industry:
Purpose: To identify the quality of Glycerin.
Glycerin analysis includes detection characterization for glycerin and products
containing glycerin.
Helping clients manage quality control, contamination and production issues.
Tests for Glycerin to check purity and quality of Glycerin.
 Chemical formula C3H8O3
 Structural formula
Instruments and Accessories:
1) Densito
2) Syringe adapter
3) 100 mL glass beaker
Tests for Glycerin:
 Concentrated glycerin (> 99%)
 Glycerin diluted (approx. 88%) (aq)
 Glycerin 50% (aq)
 Water not more than 5%

3. 2
 The color of the sample, when viewed downward against a white surface
in a 50-ml Nessler tube, is not darker than the color of a standard made
by diluting 0.4 ml of ferric chloride TSC with water to 50 ml and similarly
viewed in a Nessler tube of approximately the same diameter and color
as that containing the sample.
 Sulfated ash not more than 0.01%
 Chlorides not more than 10 mg/kg
Test 10 g of the sample as directed in the Limit Test using 0.1 mg of chloride ion
in the control.
 Chlorinated compounds not more than 30 mg/kg (as chloride ion)
 Fatty acids and esters Not more than 30 mg/kg
 Butanetriols not more than 0.2%
 Lead not more than 2 mg/kg
Result:
The resulting Glycerin is of excellent quality and has a biogenic content
of 99.7 %.