Zibo Shuanghe Chemical Technology Co., Ltd.
Shandong, China
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Agrochemical Intermediates 2 6-Dihydroxybenzoic Acid Goo Price
| Reference FOB Price: | US $25.00-28.00 / kg |
|---|---|
| Min. Order: | 1 kg |
| CAS No.: | 303-07-1 |
|---|---|
| Formula: | C7h6o4 |
| EINECS: | 206-134-8 |
| Type: | Agrochemical Intermediates |
| Appearance: | Powder |
| Quality: | Industrial |
Basic Info
Model NO.
SH-26
Colour
White or Light Yellow
Content
≥99%
Molecular Weight
154.113
Melting Point
154-155ºC
Boiling Point
343.7°c at 760 Mmhg
Flashing Point
175.8°c
Vapour Pressure
2.65e-05mmhg at 25°c
Transport Package
Draft Bag or Fiber Can
Specification
25kgs
Trademark
SHUANGHE
Origin
China
Product Description
1.Product introduction
Name: 2,6-Dihydroxybenzoic acid
Molecular formula C7H6O4
The molecular weight of 154.12
CAS NO. 303-07-1
2. Application
1: used as pesticide and pharmaceutical intermediates 2: 2, 6-dihydroxy benzoic acid is herbicide dipyrioxyl ether, pyrioxyl sulfide and pyrioxyl gram, pyrioxyl ether and other intermediates.
3. produce method
Method one: The preparation method is to dissolve resorcinol in ethanol, add anhydrous potassium carbonate in the solution, heat to 140ºC, through carbon dioxide (carbon dioxide pressure 1400kPa) reaction for 4h, get 2, 6-dihydroxy benzoic acid and 2, 4-dihydroxy benzoic acid mixture (63.1%2, 6-dihydroxy benzoic acid, 36.9%2, 4-dihydroxy benzoic acid), adding water, then adding sulfuric acid to adjust the mixture solution pH=6, and then steam part of the mixture of ethanol and water, the residual at 98 ~ 100ºC reflux for 3h, decomposition of 2, 4-dihydroxy benzoic acid. When the decomposition reaction is carried out, the pH value of the reaction mixture is maintained at 6, and sulfuric acid is appropriately added to adjust the pH value. When the decomposition reaction is complete, then add sulfuric acid in the mixture to make the pH value reached 3, there is insoluble matter formation, filtration separation, and then continue to add sulfuric acid in the filtrate to make the pH value reached 1, cooling to 5ºC, the formation of 2, 6-dihydroxybenzoic acid crystallization, filtration, crystallization, washing with water, drying at 70ºC, the finished product.
4.Package
5. Our factory
6. Transport
7.Contact
Name: 2,6-Dihydroxybenzoic acid
Molecular formula C7H6O4
The molecular weight of 154.12
CAS NO. 303-07-1
| Appearance | white (or light yellow) crystal |
| Melting point | 165 °C (dec.)(lit.) |
| Density | 1.6± 0.1g /cm³ |
| boiling point | 343.7±32.0 ºC at 760 mmHg |
| Molecular weight | 154.120 |
| flash point | 175.8±21.6 ºC |
| PSA | 77.76000 |
| vapor pressure | 0.0± 0.8mmHg at 25ºC |
| Refractive index | 1.671 |
2. Application
1: used as pesticide and pharmaceutical intermediates
3. produce method
Method one: The preparation method is to dissolve resorcinol in ethanol, add anhydrous potassium carbonate in the solution, heat to 140ºC, through carbon dioxide (carbon dioxide pressure 1400kPa) reaction for 4h, get 2, 6-dihydroxy benzoic acid and 2, 4-dihydroxy benzoic acid mixture (63.1%2, 6-dihydroxy benzoic acid, 36.9%2, 4-dihydroxy benzoic acid), adding water, then adding sulfuric acid to adjust the mixture solution pH=6, and then steam part of the mixture of ethanol and water, the residual at 98 ~ 100ºC reflux for 3h, decomposition of 2, 4-dihydroxy benzoic acid. When the decomposition reaction is carried out, the pH value of the reaction mixture is maintained at 6, and sulfuric acid is appropriately added to adjust the pH value. When the decomposition reaction is complete, then add sulfuric acid in the mixture to make the pH value reached 3, there is insoluble matter formation, filtration separation, and then continue to add sulfuric acid in the filtrate to make the pH value reached 1, cooling to 5ºC, the formation of 2, 6-dihydroxybenzoic acid crystallization, filtration, crystallization, washing with water, drying at 70ºC, the finished product.
4.Package
5. Our factory
6. Transport
7.Contact