Carbomer
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Carbomer
structure -
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CAS No:
54182-57-9
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Chemical Name:
Carbomer
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Synonyms:
Carbomer 980 940;Gel stock solution product description;Karbomer;Carbomer ISO 9001：2015 REACH;Capom 980;high qualtiy Carbomer
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CAS No:
Description
Carbomer is a polymer with the formula (CH2-CHCO2H)n. It is a derivative of acrylic acid (CH2=CHCO2H). In addition to the homopolymers, a variety of copolymers and crosslinked polymers, and partially deprotonated derivatives thereof are known and of commercial value. In a water solution at neutral pH, PAA is an anionic polymer, i.e., many of the side chains of PAA lose their protons and acquire a negative charge. Partially or wholly deprotonaated PAAs are polyelectrolytes, with the ability to absorb and retain water and swell to many times their original volume. These properties - acid-base and water-attracting - are the bases of many applications.
Characteristics
37.3
0.35
Acrylic acid is a colorless liquid with a distinctive acrid odor. Flash point 130°F. Boiling point 286°F. Freezing point 53°F. Corrosive to metals and tissue. Prolonged exposure to fire or heat can cause polymerization. If polymerization takes place in a closed container, violent rupture may occur. The inhibitor (usually hydroquinone) greatly reduces the tendency to polymerize.
1.0497 at 68 °F (USCG, 1999)
55 °F (NTP, 1992)
286 °F at 760 mm Hg (NTP, 1992)
greater than or equal to 100 mg/mL at 63° F (NTP, 1992)
3.2 mm Hg at 68 °F ; 5 mm Hg at 81.1° F (NTP, 1992)
Acrid odor and fumes
pH = 3 (approximately)
4.26(at 25 °C)
Safety Information
Stable under recommended storage conditions. Contains the following stabilizer(s): Mequinol (>/=0.018 -
Carbomer Use and Manufacturing
Mainly used as controlled-release drugs made of sustained-release materials, and external drugs as carrier matrix
Drug Function and Efficacy
Thickening agent, stabilizer, forms gels in aqueous solutions
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