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
- Molecular Weight:
- 263.29
- MDL Number:
- MFCD00004096
- MOL File:
- 92-77-3.mol
- MSDS File:
- SDS
| 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) |
| EWG's Food Scores | 1 |
| FDA UNII | V3ZU6E76NB |
| EPA Substance Registry System | 3-Hydroxy-2-naphthanilide (92-77-3) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS07,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H317-H319-H411 | |||||||||
| Precautionary statements | P261-P264-P272-P273-P280-P302+P352+P333+P313+P363-P305+P351+P338+P337+P313-P391-P501 | |||||||||
| Hazard Codes | Xi,N | |||||||||
| Risk Statements | 43-51/53 | |||||||||
| Safety Statements | 36/37-61 | |||||||||
| RIDADR | UN 3077 9/PG 3 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | QJ1897400 | |||||||||
| F | 10-21 | |||||||||
| HazardClass | 9 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29242990 | |||||||||
| NFPA 704 |
|
Naphthol AS price More Price(14)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TCI Chemical | H0313 | 3-Hydroxy-2-naphthanilide >97.0%(HPLC)(T) | 92-77-3 | 25g | $24 | 2024-03-01 | Buy |
| TCI Chemical | H0313 | 3-Hydroxy-2-naphthanilide >97.0%(HPLC)(T) | 92-77-3 | 500g | $85 | 2024-03-01 | Buy |
| TRC | N497060 | NaphtolAS | 92-77-3 | 50g | $140 | 2021-12-16 | Buy |
| Usbiological | 460573 | Naphtol AS | 92-77-3 | 5g | $319 | 2021-12-16 | Buy |
| Biosynth Carbosynth | FA41329 | C.I.Azoic Coupling Component 2 | 92-77-3 | 1kg | $320 | 2021-12-16 | Buy |
Naphthol AS Chemical Properties,Uses,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
1of2
Preparation Products
1of2
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Mojin Biotechnology Co., Ltd | +8613288715578 | sales@hbmojin.com | China | 12456 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21691 | 55 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 | info@tnjchem.com | China | 2989 | 55 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29914 | 58 |
| NINGBO INNO PHARMCHEM CO., LTD. | 13867897135 | sales@nbinno.com | CHINA | 925 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 | alice@crovellbio.com | China | 8823 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 | linda@hubeijusheng.com | CHINA | 22968 | 58 |
| Shandong chuangyingchemical Co., Ltd. | 18853181302 | sale@chuangyingchem.com | CHINA | 5909 | 58 |
| Shanghai Longyu Biotechnology Co., Ltd. | +8615821988213 | info@longyupharma.com | China | 2531 | 58 |
View Lastest Price from Naphthol AS manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2024-04-25 | Naphthol AS
92-77-3
|
US $10.00 / kg | 1kg | 99.8% | 10000ton | Ouhuang Engineering Materials (Hubei) Co., Ltd | |
 |
2023-08-04 | Naphthol AS
92-77-3
|
US $0.00-0.00 / kg | 1kg | 0.99 | 50000kg | Hebei Kingfiner Technology Development Co.Ltd | |
 |
2023-07-05 | Naphthol
92-77-3
|
US $0.00 / KG | 1KG | 99% | 50000KG/month | Hebei Mojin Biotechnology Co., Ltd |
-
- Naphthol AS
92-77-3
- US $10.00 / kg
- 99.8%
- Ouhuang Engineering Materials (Hubei) Co., Ltd
-
- Naphthol AS
92-77-3
- US $0.00-0.00 / kg
- 0.99
- Hebei Kingfiner Technology Development Co.Ltd
-
- Naphthol
92-77-3
- US $0.00 / KG
- 99%
- Hebei Mojin Biotechnology Co., Ltd