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Reference Manual
00809-0100-4002, Rev BB
November 2012
Rosemount 1199
5-8
FILL FLUID
SPECIFICATIONS –
GLYCERIN AND WATER
Glycerin and Water
Description
Glycerin is commonly used in many food, pharmaceutical, and cosmetic
products. Glycerin is mixed with water in order to decrease its viscosity. Being
a Generally Recognized As Safe (GRAS) substance, it may be used as a fill
fluid in food, beverage, dairy, and pharmaceutical applications. Since it has a
low coefficient of thermal expansion, it is also a good choice in applications
requiring high performance as long as the temperature limits are not
exceeded. FDA Code of Federal Regulations reference number: 21CFR
182.1320.
USP grade: These chemicals are manufactured under current Good
Manufacturing Practices (cGMP). These materials meet the requirements
listed in the United States Pharmacopeia (USP). The USP lists each chemical
along with certain specifications the product must meet in order to be
considered a USP product.
FCC grade: These products meet the specifications listed in the Food
Chemicals Codex. This is a book of specifications written by the Food and
Nutrition Board, the Institute of Medicine, and the National Academy of
Sciences. The chemicals that carry the FCC name are considered “Food
Grade.”
A vapor pressure curve does not exist for Glycerin and water.
Temperature Limits
At Atm Pressure
-17 to 93 °C (0 to 200 °F)
Viscosity at 25 °C (77 °F)
12.5 cs
Specific Gravity @ 25°C (77 °F)
1.13
Coefficient of Thermal
Expansion
0.000342 cc/cc/C (0.00019
cc/cc/F)
Chemical Composition
50% glycerin and 50% water
(by volume)
Содержание 1199
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