Irregular cyclic compounds with atom or non-homogeneous nitrogen atoms:
This section includes:
1- Carbazole and its derivatives:
Produced from smelting (docking) with two benzene nuclei Birol, which is found in heavy products from the distillation of coal tar oil shale. It is synthetically prepared, and is in the form of shiny crystalline crusts. Used for making dyes and plastics.
2 - Echridine and its derivatives:
Resulting from the intensification of two benzene ring with pyridine, which is found in coal tar in small quantities, but it also brings synthetically, and used for the preparation of dyeing materials and some medicines.
Some of the acridine derivatives listed here are listed (except those which are considered as dyeing materials).
A - Albrooflavin: (3.6 acid sulphate bilateral amino acridine) crystalline powder built reddish.
B - Lactate of (2,5 - Amino - 7 - Eioxi Ekridine) is yellow powder.
These derivatives have disinfectant and germicidal properties.
3. INDOL:
Coal tar is usually present in synthetic form. It is a colorless, yellowish-colored, yellowish-colored sheet that becomes red when exposed to light and air. If it contains impurities, the smell is fecal, but if it is pure, it smells very strong. Used to prepare synthetic perfumes and medicine.
Beta-Methyl Andol (Skatol):
It crystallizes in colorless chips. It has a fecal odor if it contains impurities.
5-Mercapto Benzeminazole.
6 - Vthal hydrazid (hydrazid phthalic acid).
7. Ethylenemin (aziridine) and their derivatives.
8. Bor-ferrinate (Purvin derivatives).
However, porphyrin itself (as an ingredient) is included in heading 29.39.
Some of the substances in this item which are considered to be narcotic or psychotropic substances in accordance with international conventions are listed in the list at the end of Chapter 29.
Amides of colloidal acids are excluded from this item.
This section includes:
1- Carbazole and its derivatives:
Produced from smelting (docking) with two benzene nuclei Birol, which is found in heavy products from the distillation of coal tar oil shale. It is synthetically prepared, and is in the form of shiny crystalline crusts. Used for making dyes and plastics.
2 - Echridine and its derivatives:
Resulting from the intensification of two benzene ring with pyridine, which is found in coal tar in small quantities, but it also brings synthetically, and used for the preparation of dyeing materials and some medicines.
Some of the acridine derivatives listed here are listed (except those which are considered as dyeing materials).
A - Albrooflavin: (3.6 acid sulphate bilateral amino acridine) crystalline powder built reddish.
B - Lactate of (2,5 - Amino - 7 - Eioxi Ekridine) is yellow powder.
These derivatives have disinfectant and germicidal properties.
3. INDOL:
Coal tar is usually present in synthetic form. It is a colorless, yellowish-colored, yellowish-colored sheet that becomes red when exposed to light and air. If it contains impurities, the smell is fecal, but if it is pure, it smells very strong. Used to prepare synthetic perfumes and medicine.
Beta-Methyl Andol (Skatol):
It crystallizes in colorless chips. It has a fecal odor if it contains impurities.
5-Mercapto Benzeminazole.
6 - Vthal hydrazid (hydrazid phthalic acid).
7. Ethylenemin (aziridine) and their derivatives.
8. Bor-ferrinate (Purvin derivatives).
However, porphyrin itself (as an ingredient) is included in heading 29.39.
Some of the substances in this item which are considered to be narcotic or psychotropic substances in accordance with international conventions are listed in the list at the end of Chapter 29.
Amides of colloidal acids are excluded from this item.
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Carboxylic acids