Reactive Yellow 39 - Names and Identifiers
| Name | Reactive Yellow 39
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| Synonyms | Reactive Yellow 39
C.I. Reactive Yellow 39
4-[4-[[5-(2-bromoprop-2-enoylamino)-2-sulfonatophenyl]diazenyl]-3-methyl-5-oxo-4H-pyrazol-1-yl]-2,5-dichlorobenzenesulfonate
disodium 4-{4-[(E)-{5-[(2-bromoacryloyl)amino]-2-sulfonatophenyl}diazenyl]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl}-2,5-dichlorobenzenesulfonate
Disodium 4-{4-[(E)-{5-[(2-bromoacryloyl)amino]-2-sulfonatophenyl} diazenyl]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl}-2,5-dichlor obenzenesulfonate
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| CAS | 12226-61-8
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| EINECS | 274-499-0 |
| InChI | InChI=1/C19H14BrCl2N5O8S2.2Na/c1-8(20)18(28)23-10-3-4-15(36(30,31)32)13(5-10)24-25-17-9(2)26-27(19(17)29)14-6-12(22)16(7-11(14)21)37(33,34)35;;/h3-7,17H,1H2,2H3,(H,23,28)(H,30,31,32)(H,33,34,35);;/q;2*+1/p-2/b25-24+; |
Reactive Yellow 39 - Physico-chemical Properties
Reactive Yellow 39 - Introduction
Reactive Yellow 39, also known as Methyl Orange, is a common organic dye. The following is an introduction to the nature, use, preparation and safety information of Reactive Yellow 39:
Nature:
-Appearance: Reactive Yellow 39 is a red or orange crystalline powder.
-Solubility: soluble in water, slightly soluble in ethanol and ether.
- pH indicator: In the pH range of 3.1-4.4, Reactive Yellow 39 shows red; in the pH range of 4.4-6.0, it shows orange.
Use:
- pH indicator: Because Reactive Yellow 39 is sensitive to changes in the acid-base environment, it is often used as an acid-base indicator, such as detecting and determining pH in chemical experiments.
-Dye: Because Reactive Yellow 39 has a bright color, it is often used as an orange dye for dyeing textiles, leather, paper and plastics.
Preparation Method:
The preparation method of Reactive Yellow 39 is relatively simple. A common method is to obtain by the nitration reaction of aniline (Aniline), a compound containing aromatic amines, with silver nitrate (AgNO3) catalyzed by concentrated sulfuric acid (H2SO4).
Safety Information:
-Reactive Yellow 39 Although it does not cause serious toxicity under normal circumstances, it is still a chemical and needs to be handled with care.
-For any chemical, the relevant safety data sheets and guidelines should be carefully read and followed before use.
-Avoid inhalation, ingestion or contact with skin when using Reactive Yellow 39.
-During operation, personal protective equipment such as protective gloves, glasses and masks should be worn to avoid inhaling its dust or solution.
-When storing Reactive Yellow 39, it should be sealed and kept in a dry and cool place, away from fire sources and combustibles.
Please note that the above information is for reference only. Please follow laboratory safety procedures and evaluate according to specific needs when conducting experiments or applying Reactive Yellow 39.
Last Update：2024-04-09 21:04:16