Carboxy Methyl Cellulose Sodium (CMC)
■ Chemical Description
-- Carboxymethylcellulose sodium (abbr. CMC)
■ CAS No. 9004-32-4
■ Molecular and Structural Formula C8H16NaO8
■ Characteristics
--A White flocculent powder, odorless, tasteless, non-toxic;
--Soluble in water, forming a transparent colloidal solution;
■ Specification
No |
Tests |
Specification |
1 |
Viscosity (water solution with mass fraction of 2%) |
mpa.s ≥25 |
2 |
Degree of Substitution |
0.20-1.50 |
3 |
Mass Fraction of Loss on Drying |
6.0-8.5 |
4 |
Mass Fraction of Loss on Drying % |
≤10.0 |
5 |
Mass Fraction of Chloride (calculated by C1) % |
≤1.2 |
6 |
Mass Fraction of Arsenic % |
≤0.0002 |
7 |
Mass Fraction of Lead % |
≤0.0005 |
8 |
Mass Fraction of Heavy Metal (calculated by Pb) % |
≤0.0015 |
9 |
Mass Fraction of iron % |
≤0.02 |
■ Application
-- used for the surface treatment of vegetables, fruits, eggs and tea, to form a thin film on its surface, to maintain the original color and flavor and extend shelf life.;
-- Used to repair teeth, to make laxative, hemostatic agents, frame adhesive;
-- used as a thickener, suspending agents, binders, protective colloid in the area of drilling mud, papermaking on tobacco, detergent/textile and architectural ceramics;
■ Packaging and Storage
--Packed in 25,50 kg fiber bag, inner lined with PE bags;
--Stored in dry place at room temperature;
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