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Red Sun Dye Chem is Manufacturer and Supplier of Acid Yellow 34. which are used for coloring the various fabrics like wool, nylon, silk and many more protein fibers. These products are developed at our high end manufacturing division using accurate chemical compositions and are known for their optimum performance.

Acid Yellow 34 Specification :

The Acid Yellow 34 sodium salt, with the CAS registry number 6359-97-3, is also known as Benzenesulfonic acid, 2,5-dichloro-4-(4,5-dihydro-3-methyl-5-oxo-4-(2-phenyldiazenyl)-1H-pyrazol-1-yl)-, sodium salt (1:1). Acid YellowIt belongs to the product category of Organics. Its EINECS registry number is 228-818-5. This chemical’s molecular formula is C16H11Cl2N4NaO4S and molecular weight is 447.977576. Its IUPAC name is called sodium 2,5-dichloro-4-(3-methyl-5-oxo-4-phenyldiazenyl-4H-pyrazol-1-yl)benzenesulfonate.

Physical properties of Acid Yellow 34 sodium salt:
(1)ACD/LogP: 1.84;
(2)# of Rule of 5 Violations: 0;
(3)ACD/LogD (pH 5.5): -1.66;
(4)ACD/LogD (pH 7.4): -1.66;
(5)ACD/BCF (pH 5.5): 1;
(6)ACD/BCF (pH 7.4): 1;
(7)ACD/KOC (pH 5.5): 1;
(8)ACD/KOC (pH 7.4): 1;
(9)#H bond acceptors: 8;
(10)#H bond donors: 1;
(11)#Freely Rotating Bonds: 4.

Preparation of Acid Yellow 34 sodium salt: this chemical can be prepared by aniline and 1-(2′, 5′-dichloro-4′-sulfophenyl)-3-methyl-5-pyrazolone.
When you are using this chemical, please be cautious about it as the following:
This chemical may cause inflammation to the skin or other mucous membranes. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing.
You can still convert the following datas into molecular structure:
(1)Canonical SMILES: CC1=NN(C(=O)C1N=NC2=CC=CC=C2)C3=CC(=C(C=C3Cl)S(=O)(=O)[O-])Cl.[Na+] (2)InChI: InChI=1S/C16H12Cl2N4O4S.Na/c1-9-15(20-19-10-5-3-2-4-6-10)16(23)22(21-9)13-7-12(18)14(8-11(13)17)27(24,25)26;/h2-8,15H,1H3,(H,24,25,26);/q;+1/p-1

Properties and Applications:

brilliant yellow. Soluble in water for yellow, soluble in soluble fiber element, slightly soluble in alcohol. The strong sulfuric acid for green light yellow, diluted discoloration; In strong hydrochloric acid for green light yellow. In water solution to join 10% sodium hydroxide solution red after a slightly deepened. Used for wool, silk, vinegar and polyamide fiber dyeing and printing directly, also used for paper, leather shading. The Barium salt can be used for resin coating and color.


Name: Acid Yellow 34
CAS: 6359-90-6
C.I. No.: C.I. 18890
Synonyms Benzenesulfonicacid, 2,5-dichloro-4-[4,5-dihydro-3-methyl-5-oxo-4-(phenylazo)-1H-pyrazol-1-yl]-,sodium salt (9CI);C.I. Acid Yellow 14, monosodium salt (8CI);C.I. 18960;C.I.Acid Yellow 14;Cetil Light Yellow 3G;Daedo Acid Yellow 2G;Light Fast Yellow3G;Metamine Fast Light Yellow 3GA;Rifa Acid Yellow 2G;Rifa Leather YellowGL;Yellow N 6G;ACID YELLOW 14
Molecular Formula C16H12ClN4NaO4S
Molecular Weight 414.81
InChI InChI=InChI=1S/C16H12Cl2N4O4S.Na/c1-9-15(20-19-10-5-3-2-4-6-10)16(23)22(21-9)13-7-12(18)14(8-11(13)17)27(24,25)26;/h2-8,15H,1H3,(H,24,25,26);/q;+1/p-1
CAS Registry Number 6359-90-6
EINECS 228-818-5
Molecular Structure Acid Yellow 34

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