Naphthol AS
- Product Name
- Naphthol AS
- CAS No.
- 92-77-3
- Chemical Name
- Naphthol AS
- Synonyms
- NAPTHOL AS;2-Hydroxy-3-naphthanilide;3-hy;azotola;CI 37505;celcotrf;diatholas;naftolomm;naphtolas;Azoic CC2
- CBNumber
- CB0697833
- Molecular Formula
- C17H13NO2
- Formula Weight
- 263.29
- MOL File
- 92-77-3.mol
Naphthol AS Property
- Melting point:
- 246-248 °C(lit.)
- Boiling point:
- 406.53°C (rough estimate)
- Density
- 1.1138 (rough estimate)
- refractive index
- 1.4500 (estimate)
- storage temp.
- Refrigerator
- solubility
- Insoluble in water; sparingly soluble in ethanol
- Colour Index
- 37505
- form
- Powder
- pka
- 9.70(at 25℃)
- color
- Beige
- PH Range
- Non& uorescence (8.2) to yellow/green & uorescence (10.3)
- λmax
- 394nm
- Major Application
- Sensors, recording materials, photovoltaic cells, copying materials, photoreceptors, lithographic printing plates, inks, toner, paints, textiles, detecting cancer
- CAS DataBase Reference
- 92-77-3(CAS DataBase Reference)
- EPA Substance Registry System
- 3-Hydroxy-2-naphthanilide (92-77-3)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H411Toxic to aquatic life with long lasting effects
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P391Collect spillage. Hazardous to the aquatic environment
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- H0313
- Product name
- 3-Hydroxy-2-naphthanilide
- Purity
- >97.0%(HPLC)(T)
- Packaging
- 25g
- Price
- $22
- Updated
- 2023/01/07
- Product number
- H0313
- Product name
- 3-Hydroxy-2-naphthanilide
- Purity
- >97.0%(HPLC)(T)
- Packaging
- 500g
- Price
- $81
- Updated
- 2023/01/07
- Product number
- N497060
- Product name
- NaphtolAS
- Packaging
- 50g
- Price
- $140
- Updated
- 2021/12/16
- Product number
- 460573
- Product name
- Naphtol AS
- Packaging
- 5g
- Price
- $319
- Updated
- 2021/12/16
- Product number
- FA41329
- Product name
- C.I.Azoic Coupling Component 2
- Packaging
- 1kg
- Price
- $320
- Updated
- 2021/12/16
Naphthol AS Chemical Properties,Usage,Production
Description
Naphtol AS is a coupling agent in cotton dying. Occupational dermatitis was reported in a woman involved in needlework, probably sensitized from occupational contact with clothes.
Chemical Properties
beige powder
Uses
Naphtol AS was used as off-the-shelf color-based anion sensors in organic solvents.
Preparation
aniline and 3-Hydroxy-2-naphthoic acid?condensation.
Hazard
Low toxicity by ingestion.
Contact allergens
Naphthol AS is a coupling agent in cotton dyeing, inducing occupational dermatitis or contact allergy in consumers in contact with cotton-dyed clothing. It has been indirectly reported as a cause of occupational allergy due to its coupling with Diazo Component 51, or as a crosssensitizer or sensitizer associated with Pigment Red 23 in red parts of tattoos. Pigmented contact dermatitis is usual in patients with a high phototype.
Purification Methods
Crystallise it from xylene or AcOH which forms plates m 243-244o [Schnopper et al. Anal Chem 31 1542 1959]. [Beilstein 12 H 505.]
Properties and Applications
rice or small red powder, melting point of 243 ~ 244 ℃, more sensitive to the air. In sodium hydroxide solution for yellow in liquid, insoluble in water and sodium carbonate solution, slightly soluble in ethanol, soluble in hot the difficulties. This product is widely used in the cotton fabric dyeing and printing. Dyeing cotton, cotton affinity is low, medium coupled ability. Can also be used for cotton yarn, polyester/cotton, PVA, viscose, silk and vinegar fiber dyeing, also can undertake direct printing, and reactive dye printing and cotton fabrics with the dye printing, discharge printing, the reactive dyes color printing and dyeing, and used to make quick pigment, fast amine element, element and organic pigment fast sulfonylurea medications.
Naphthol AS Preparation Products And Raw materials
Raw materials
Preparation Products
Naphthol AS Suppliers
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View Lastest Price from Naphthol AS manufacturers
- Product
- Naphthol AS 92-77-3
- Price
- US $100.00/KG
- Min. Order
- 1KG
- Purity
- 99%min
- Supply Ability
- 200TON
- Release date
- 2020-12-08
- Product
- Naphthol AS 92-77-3
- Price
- US $15.00/Kg/Drum
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 5000tons per month
- Release date
- 2021-04-01
- Product
- Naphthol AS 92-77-3
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-08-11