Difference between revisions of "Brasilin"
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Natural Red 24; CI 75280; brasileina (Esp.); brasiliini (Fin.); brasilina (It.); brasileína (Port.); brazilein; brazilin; Brazilwood extract; permambuco extract; hypernic extract | Natural Red 24; CI 75280; brasileina (Esp.); brasiliini (Fin.); brasilina (It.); brasileína (Port.); brazilein; brazilin; Brazilwood extract; permambuco extract; hypernic extract | ||
| − | == | + | == Risks == |
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| + | Sensitive to air and light. | ||
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| + | ==Physical and Chemical Properties== | ||
Yellow, needle-like crystalline solid | Yellow, needle-like crystalline solid | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 130 (dec) | + | | 130 C (dec) |
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! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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| − | == | + | ==Resources and Citations== |
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* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1392 | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1392 | ||
| − | * Website | + | * Website: http://www.coloria.net/varita.htm - Finnish name |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 08:17, 10 May 2022
Description
The water-soluble colorant extracted from brazilwood and sappanwood. Brasilin oxidizes in air to form brasilein which is soluble in water. It is used as a dye, ink for red and purple colors. Brasilin is also used as an acid-base indicator turning yellow in acid and bright red in alkali.
See Brazilwood dye.
Synonyms and Related Terms
Natural Red 24; CI 75280; brasileina (Esp.); brasiliini (Fin.); brasilina (It.); brasileína (Port.); brazilein; brazilin; Brazilwood extract; permambuco extract; hypernic extract
Risks
Sensitive to air and light.
Physical and Chemical Properties
Yellow, needle-like crystalline solid
Soluble in water, ethanol, ether, alkalis.
| Composition | C16H14O5 |
|---|---|
| Melting Point | 130 C (dec) |
| Molecular Weight | mol. wt. = 286.28 |
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1392
- Website: http://www.coloria.net/varita.htm - Finnish name