Choose the correct answer: 1- The first known cyanine dye was a-Ethyl red. 5 Quinoline blue c-Pinacyanol 2- Sulfur dyes have a-positive charge negative charge d-No charge 3- Chloro phthalocyanines have. Poor b- Excellent c-Moderate solubility in organic solvents.

Choose the correct answer: 1- The first known cyanine dye was a-Ethyl red. 5 Quinoline blue c-Pinacyanol 2- Sulfur dyes have a-positive charge negative charge d-No charge 3- Chloro phthalocyanines have. Poor b- Excellent c-Moderate solubility in organic solvents.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter22: Reactions Of Benzene And Its Derivatives

Section: Chapter Questions

Problem 22.51P

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Concept explainers

Amines

Amines are organic compounds with a nitrogen atom having a lone pair of electrons on it. They are derived from ammonia (NH3) wherein hydrogen atoms are substituted by an aryl or alkyl group.

Question

100%

Choose the correct answer:
1- The first known cyanine dye was:
a-Ethyl red.
5 Quinoline blue
c-Pinacyanol
2- Sulfur dyes have
a-positive charge
negative charge
d- No charge
3- Chloro phthalocyanines have. ......... solubility in organic solvents.
#Poor
b- Excellent
c-Moderate

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