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Home > Products > Organic Intermediate > Dyestuff Intermediate > Organic raw material 2-naphthol CAS 135-19-3

Organic raw material 2-naphthol CAS 135-19-3
Organic raw material 2-naphthol CAS 135-19-3
Organic raw material 2-naphthol CAS 135-19-3
Organic raw material 2-naphthol CAS 135-19-3
Organic raw material 2-naphthol CAS 135-19-3

Organic raw material 2-naphthol CAS 135-19-3

Payment Type: L/C,T/T,Paypal,Money Gram,Western Union
Incoterm: FOB,CIF
Delivery Time: 3 Days

Basic Info

    Model No.: X-CAS 135-19-3

    Aldehyde: Fatty Aldehyde

    Aether: Aliphatic Ethers

    Hydroxybenzene: Monohydric Phenol

    Ketone: Saturated Ketone

    Name:: 2-naphthol

    CAS:: 135-19-3

    MF:: C10H8O

    MW:: 144.17000

    Density:: 1,28 G/cm3

    MP:: 120-122 °C(lit.)

    Bp:: 285-286 °C(lit.)

    FP:: 153 °C

Additional Info

    Packaging: Drum or as your request

    Productivity: 10000kg per month

    Brand: zhishang chemical

    Transportation: Ocean,Land,Air

    Place of Origin: Shandong, China (Mainland)

    Supply Ability: 100000kg

    Certificate: ISO CE

    HS Code: 29071590

    Port: Shanghai,Tianjin,Qingdao

Product Description

Organic Raw Material 2-naphthol CAS 135-19-3

Application: Determination of bromine, chlorine, chlorate, niobium, copper, nitrite and potassium. Fluorescence determination of phenol sulfonate transferase. Acid base indicator, dye, organic synthesis, allyl alcohol, methanol, chloroform and other qualitative determination. Carbon monoxide, ethanol absorbent, fluorescence indicator. Fluorescent indicator; Ph indicator; Dye intermediate

Methods of production:

(1) sulfonated alkali melting method. The refined naphthalene placed sulfonated pot, heated (melt) to 140 ℃. 1.085 times (molar ratio) concentrated sulfuric acid was added within 20 min, warmed and incubated at 160-164 ° C. for 2.5 h. When the 2-naphthalene sulfonic acid content of 66% or more, the total acidity of 25% -27% when the reaction ended. Sulfide hydrolyzed in a hydrolysis pot at 140-150 ° C for 1 h. Then neutralized in a pan at 80-90 ° C with sodium nitrite solution neutralized until Congo red test paper does not change blue so far. SO2 gas is driven off with steam and air, after cooling to 30-40 DEG C, the solution is filtered off with suction and washed with 10% brine and then filtered to obtain 2-naphthalene sulfonate.

The sodium hydroxide was placed in an alkali melting pot, heated (melted) to 290 ° C and sodium 2-naphthalenesulfonate was added in about 3 h until the free base content was 5% to 6%. After incubation at 320-330 ° C for 1 h. The alkali melt diluted in water, pass SO2 to phenolphthalein colorless at 70-80 ℃. Add water and wash, remove the sodium sulfite, and then dehydrated, vacuum distillation of the finished product, the total yield was 73% -74%.

(2) 2-isopropylene naphthalene method. With naphthalene and propylene as raw materials, the production of 2 - naphthol by-product acetone.

2-naphthol CAS 135-19-32-naphthol CAS 135-19-3 A

Product expansion

1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the Raw Material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories.

2> Active Pharmaceutical Ingredients(API): API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.

3> Fragrance And Spices: Spices are an important part of fine chemicals, it is composed of natural spices, synthetic spices and single fragrance.

4> Organic Raw Material: Intermediates are also known as organic intermediates. The use of coal tar or petroleum products as raw materials to produce dyes, resins, Additives, and other intermediates.

5> Chemicals Used In Paints: Paint, the traditional Chinese name is paint. So-called coating is coated on the surface of the object that be protected or be adornment, and with the continuous film coating to form strong adhesion.

6> Pharmaceutical Intermediates: The so-called pharmaceutical intermediates, refers to the production of pharmaceutical products in the process, the use of raw materials, materials, accessories and other intermediate products.

7> Agricultural Chemicals: Research and agriculture related chemical, including pesticide, plant growth regulator, fertilizer, compound fertilizer, herbicide etc.

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Product Categories : Organic Intermediate > Dyestuff Intermediate

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