Product name Acid Yellow 199
Alias Acid Yellow 199
Weak Acid Yellow AGR
4-[[4-[(4-hydroxy-2-methylphenyl)azo]phenyl]amino]-3-nitrobenzenesulfonic acid monosodium salt
English alias Acid Yellow 199
Tracid Yellow AGR
Weak Acid Yellow AGR
Apollo Nylon Fast Yellow M-4R
CAS 70865-20-2
EINECS 274-950-1
Chemical formula C19H15N4NaO6S
Molecular weight 450.40037
Acid Yellow 199, also known as Brilliant Yellow G, is an organic acid dye. The following is an introduction to the properties, uses, preparation methods and safety information of Acid Yellow 199:
Properties:
- Appearance: Acid Yellow 199 is a yellow powder.
- Solubility: It dissolves well in water, with higher solubility under acidic conditions, but lower solubility under alkaline conditions.
- Stability: Acid Yellow 199 is relatively stable to light and heat.
Uses:
- Acid Yellow 199 is commonly used as a dye and indicator.
- In the textile industry, it is widely used to dye fiber materials such as cotton, wool and silk under acidic conditions.
- It can also be used to prepare acid inks, pigments, dye inks and markers.
Preparation:
- Acid Yellow 199 is usually prepared by nitration of Brilliant Yellow G.
- In the laboratory, Brilliant Yellow G can be mixed with nitric acid and then heated to react, and finally Acid Yellow 199 is obtained.
Safety information:
- Acid Yellow 199 belongs to the category of chemical dyes. Care should be taken to avoid inhalation of dust or contact with skin and eyes.
- During operation, appropriate personal protective equipment such as gloves, glasses and respirators should be worn.
- Acid Yellow 199 should be kept away from fire during storage and use, and stored in a cool and dry place.
- Try to avoid contact with oxidants, acidic substances and alkaline substances.
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