Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer of 2-Naphthol (β-Naphthol) (CAS: 135-19-3) with high quality, production capacity 20000 Tons per year. Ruifu Chemical can provide worldwide delivery, competitive price, small and bulk quantities available. Purchase 2-Naphthol, Please contact: alvin@ruifuchem.com
| Chemical Name | 2-Naphthol |
| Synonyms | β-Naphthol; beta-Naphthol; 2-Naphthalenol; β-Hydroxynaphthalene; 2-Hydroxynaphthalene; Azogen Developer A; Betanaphthol; β-Naphthyl Alcohol; Naphthalen-2- ol; Naphth-2- ol |
| Stock Status | In Stock, Production Capacity 20000 Tons per Year |
| CAS Number | 135-19-3 |
| Molecular Formula | C10H8O |
| Molecular Weight | 144.17 g/mol |
| Melting Point | 120.0 to 124.0℃(lit.) |
| Boiling Point | 285.0~286.0℃(lit.) |
| Density | 1.28 g/cm3 |
| Sensitive | Light Sensitive |
| Water Solubility | Insoluble in Water, 0.74 g/l 25℃ |
| Solubility in EtOH | Almost Transparency |
| Solubility | Very Soluble in Alcohol. Soluble in Chloroform, Ether, Benzene |
| Storage Temp. | Cool & Dry Place, Avoid Light |
| COA & MSDS | Available |
| Shelf Life | >3 Years if Stored Properly |
| Brand | Ruifu Chemical |
| Items | Inspection Standards | Results |
| Appearance | Off-White to Gray Powder | Complies |
| Melting Point | 120.0 to 124.0℃ | 121.0~122.0℃ |
| Water by Karl Fischer | ≤0.10% | <0.10% |
| Ignition Residue | ≤0.05% | <0.05% |
| Naphthalene | ≤0.50% | <0.50% |
| 1-Naphthol | ≤0.30% | <0.30% |
| Heavy Metals (Pb) | ≤10ppm | <10ppm |
| Purity / Analysis Method | >99.0% (GC) | 99.15% |
| Infrared Spectrum | Consistent with Structure | Complies |
| 1 H NMR Spectrum | Consistent with Structure | Complies |
| Conclusion | The product has been tested & complies with the given specifications | |
Package: 25kg/plastic bag, or woven bag, Drum, or according to customer's requirement.
Storage Condition: Light Sensitive. Fire prevention, moisture prevention and exposure prevention shall be conducted during storage and transportation. Store in cool, dry, well-ventilated warehouse away from incompatible substances. The flammable and toxic substances shall be stored and transported according to the regulations.
Shipping: Deliver to worldwide by FedEx / DHL Express, by air, by sea. Provide fast and reliable delivery.
Flammable. The color gradually becomes darker when stored for a long time and is stable in the air, but the color gradually becomes darker when exposed to sunlight. Heat sublimation, irritating smell of phenol.
How to Purchase? Please contact Dr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com
15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals.
Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc.
Advantages? Superior quality, affordable price, professional services and technical support, fast delivery.
Quality Assurance? Strict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc.
Samples? Most products provide free samples for quality evaluation, shipping cost should be paid by customers.
Factory Audit? Factory audit welcome. Please make an appointment in advance.
MOQ? No MOQ. Small order is acceptable.
Delivery Time? If within stock, three days delivery guaranteed.
Transportation? By Express (FedEx, DHL), by Air, by Sea.
Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.
Custom Synthesis? Can provide custom synthesis services to best fit your research needs.
Payment Terms? Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc.
Hazard Codes Xn,N
Risk Codes
R20/22 - Harmful by inhalation and if swallowed.
R50 - Very Toxic to aquatic organisms
Safety Description
S24/25 - Avoid contact with skin and eyes.
S61 - Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs UN 3077 9/PG 3
WGK Germany 2
RTECS QL2975000
FLUKA BRAND F CODES 8
TSCA Yes
HS Code 2907151000
Hazard Class 9
Packing Group III
Toxicity LD50 orally in Rabbit: 1960 mg/kg LD50 dermal Rabbit >10000 mg/kg
2-Naphthol (β-Naphthol) (CAS: 135-19-3), a naphthol carrying a hydroxy group at position 2, slight phenolic odor. Darkens in air and on exposure to light. Long storage or light color in turn dark, can happen oxidation, reduction, nitrification and nitrosation reaction, and products, light and heat, halogenating role, etc.
2-Naphthol is used in the manufacture of dyes, perfumes, and medicinal organics, and in the production of antioxidants for synthetic rubber.
2-Naphthol is a hydroxyarene molecule, which when electronically excited forms strong acid. Excited 2OH dissociates only in water. It has a slight phenolic odor. It is incompatible with strong oxidizing agents, strong bases, acid chlorides and acid anhydrides. It is one of the most commonly used fluorescence dye.
2-Naphthol is a derivative of naphthalene, and is produced by the condensation of two molecules of malonic acid in the presence of a reducing agent such as sodium borohydride. 2-Naphthol is used as a pesticide and as a chemical intermediate in the production of other chemicals.
It is the raw materials of organic synthesis and dye intermediates; Used as tobias acid, butyric acid, and azo dyes; Used as rubber antioxidant, mineral flotation agents, germicides, fungicides, antiseptic, antioxidant, prevention and treatment of parasites, used in spices, leather tanning agents, textile auxiliaries etc.
Although the toxicity of 2-Naphthol is of low order in test animals, ingestion of large amounts may result in nausea, vomiting, diarrhea, abdominal pain, convulsions, and hemolytic anemia. Death may result from respiratory failure. The oral LD50 value in rats is in the range 2000 mg/kg. 2-Naphthol is slightly more toxic than 1-Naphthol [9015-3], the oral LD50 value of which is in the range 2500 mg/kg.
Skin contact can produce peeling of the skin and pigmentation.
Poison by ingestion, inhalation, and subcutaneous routes. Mutation data reported. A skin and eye irritant. Combustible when exposed to heat or flame. To fight fire, use CO2, dry chemical. Incompatible with antipyrine, camphor, phenol, ferric salts, menthol, potassium permanganate and other oxidzing materials, urethane.
A potential danger to those involved in rubber antioxidant production, synthesis of dyes; leather processing; fungicides, pharmaceuticals, and perfumes. Used as an antioxidant for fats, oils; as an antiseptic; in insecticides.
UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard Class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.
Dust or powder may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, iron salts; 2,3-dimethyl-1- phenyl-3-pyrazolin-5-one (antipyrine); camphor, phenol, menthol, urethane.