Difference between revisions of "Galactan gum"
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== Description == | == Description == | ||
| − | A carbohydrate exudate obtained from the wood chips of the western larch tree, ''Larix occidentalis''. Galactan gum is high in [ | + | A carbohydrate exudate obtained from the wood chips of the western larch tree, ''Larix occidentalis''. Galactan gum is high in [[arabinose]] and [[galactose]]. It is soluble in water producing an amber color solution of pH 4-5. Galactan gum forms solutions of lower viscosity than most other gums and is often used as an [[emulsifier]] in water/oil mixtures. A primary use for galactan gum is as a [[gum arabic]] substitute in lithography. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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''Larix occidentalis''; goma de alerce (Esp.); gomma di larice (It); larch gum; Stractan | ''Larix occidentalis''; goma de alerce (Esp.); gomma di larice (It); larch gum; Stractan | ||
| − | == | + | == Physical and Chemical Properties == |
| − | Soluble in water. | + | * Soluble in water. |
| + | * CAS = 37320-79-9 | ||
| − | + | ==Resources and Citations== | |
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| − | + | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 381 | |
| − | * | + | * I.W. Cottrell, J.K. Baird, gums chapter |
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[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 13:19, 24 July 2022
Description
A carbohydrate exudate obtained from the wood chips of the western larch tree, Larix occidentalis. Galactan gum is high in Arabinose and Galactose. It is soluble in water producing an amber color solution of pH 4-5. Galactan gum forms solutions of lower viscosity than most other gums and is often used as an Emulsifier in water/oil mixtures. A primary use for galactan gum is as a Gum arabic substitute in lithography.
Synonyms and Related Terms
Larix occidentalis; goma de alerce (Esp.); gomma di larice (It); larch gum; Stractan
Physical and Chemical Properties
- Soluble in water.
- CAS = 37320-79-9
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 381
- I.W. Cottrell, J.K. Baird, gums chapter