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Orcein

Orcein are names for dyes extracted from several species of lichen. Orcinol is extracted from such lichens. It is then converted to orcein by ammonia and air. In traditional dye-making methods, urine was used as the ammonia source.It is red in acidic pH and blue in alkaline pH. It forms dark brown crystals. It is a mixture of phenoxazone derivates - hydroxyorceins, aminoorceins, and aminoorceinimines.

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Orcinol

Orcinol is a natural phenolic organic compound that occurs in many species of lichens including Rocella tinctoria and Lecanora. It can be formed by fusing extract of aloes with potash. It is used in the production of the dye orcein and as a reagent in some chemical tests for pentoses, such as Bial's Test.

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Orthanilic Acid

Aniline-2-sulfonic acid is used as dyes intermediates.

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Ortho Amino Phenol

2-Aminophenol is used as an intermediate for azo and sulphur dyes, rubber antioxidant, photo developer.

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Ortho Anisaldehyde

ortho-Anisaldehyde is used in the creation and manufacturing of flavor and fragrance agents. It is also used as an dye intermediate.

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Ortho Anisidine

Ortho Anisidine is used as intermediate for dyes.

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Ortho Chloro Benzylamine

Ortho Chloro benzylamine is used as chemical intermediate for the manufacture of dyestuffs, pigments, optical brighteners, textile auxiliaries, agrochemicals, amino acids and other organic compounds.

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Ortho Nitro Aniline

Ortho Nitro Aniline is rubber antioxidant MB, pesticides carbendazim, light stabilizer UV-P intermediates.It can be used as the goods azoic dyes for color-based (orange-GC), and other dye intermediates, can be used to hand Cotton fabric dyeing, the system could Color Yield amylin.

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