PRODUCT IDENTIFICATION
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
white to gray powder
REFRACTIVE INDEX
APPLICATIONS
APPEARANCE
white to gray powder
CONTENT
97.0% min
WATER
1.0% max
Price:
|
|
|
| NAPHTHIONIC ACID | ||
|
PRODUCT IDENTIFICATION |
||
| CAS NO. | 84-86-6 |
|
| EINECS NO. | 201-567-9 | |
| FORMULA | H2NC10H6SO3H | |
| MOL WT. | 223.25 | |
| H.S. CODE | ||
| SMILES |
| |
| TOXICITY | ||
| SYNONYMS | Piria's Acid; Alpha-Naphthylamine-P-Sulfonic Acid; | |
| 1-Naphthylamine-4-sulfonic Acid; 4-Amino-1-naphthalenesulfonic acid; 1,4-Naphthionic Acid; | ||
|
CLASSIFICATION |
|
|
|
PHYSICAL AND CHEMICAL PROPERTIES |
||
| PHYSICAL STATE |
white to gray powder | |
| MELTING POINT | > 300 C (decomposes) | |
| BOILING POINT | ||
| SPECIFIC GRAVITY | 1.68 | |
| SOLUBILITY IN WATER | Soluble | |
| AUTOIGNITION | ||
| pH | ||
| VAPOR DENSITY | ||
| NFPA RATINGS | ||
|
REFRACTIVE INDEX |
||
| FLASH POINT |
| |
| STABILITY | Stable under ordinary conditions (light and air sensitive) | |
|
APPLICATIONS |
||
| Naphthols are either of two crystalline monohydric alcohols, derived from naphthalene and belong to the phenol family. There are position isomers; alpha-naphthol (also called 1-naphthol) is 1-hydroxynaphthalene and beta-naphthol (also called 2-naphthol) is 2-hydroxynaphthalene. The compound 1-naphthol is made by heating 1-naphthalenesulfonic acid with caustic alkali or by heating 1-naphthylamine with water under pressure. The compound 2-naphthol is manufactured by fusing 2-naphthalenesulfonic acid with caustic soda. The different positions provide various chemical structures which offer important roles to each characteristic colours. Naphthols are slightly soluble in water but readily soluble in short alcohols, ethers chlorinated solvents, and caustic alkalis. They are used directly in making several dyes and are converted into numerous corresponding amines, esters, ethers and carboxylic derivatives as well as into numerous sulfo- and nitro-group substituted (mono-, di- and tri) naphthol compounds. They find extensive applications in making dyes, pigments, fluorescent whiteners, tanning agents, antioxidants, and antiseptics. Naphthol structure is found as a ligand in transition-metal catalysts particularly in the form of binaphthol (binol) which is composed of two naphthol rings connected at one carbon site on each ring. Optically active binol is widely used in asymmetric synthesis of rearrangements, epoxidations, reductions. | ||
| SALES SPECIFICATION | ||
|
APPEARANCE |
white to gray powder | |
|
CONTENT |
97.0% min | |
|
WATER |
1.0% max | |
| TRANSPORTATION | ||
| PACKING | ||
| HAZARD CLASS | ||
| UN NO. | ||
| OTHER INFORMATION | ||
|
Hazard
Symbols: C, Risk Phrases: 22/34, Safety Phrases:
25/28A/36/37/39/45 Price: |
||
|
|
|
|
|
