Agricultural Chemicals Auxin Hormones Sodium Naphthoacetate Acid Naa-Na 98%Tc

Physical and chemical properties

This product is white granule, powder or crystalline powder; Odorless or slightly smelly, slightly sweet and salty. This product is easily soluble in water and slightly soluble in ethanol.

Stable in air. The solution is stable at a pH of 7-10. Highly soluble in water (53.0g/100ml,25℃). Soluble in ethanol (1.4g/100ml). The pH value of the aqueous solution is 8. The ability to prevent fermentation and bactericidal power is weaker than benzoic acid. At pH 3.5, a 0.05% solution completely prevents yeast growth, and at pH 6.5, a concentration of more than 2.5% solution is required.

Advantages and disadvantages

(1) Excellent solubility: high purity α-naphthalene acetate sodium has water and oil two-solubility, so it can be independently made into water, powder, cream, granule and other dosage forms, which is very convenient to use and has a very good effect. Because it is a single molecule in the solution, dispersed evenly, easy to be absorbed by plants, and the ordinary content of 80% α-naphthalene acetate sodium needs to be dissolved with ethanol, the use is very inconvenient. It exists in the state of molecular groups in the cream powder, the dispersion is poor, and the effect is naturally not good.

(2) High purity, no impurities, non-toxic side effects: high purity α-naphthalene acetate sodium purity of more than 98%, contains a small amount of water, does not contain other organic impurities, so in its effective use of concentration range generally will not cause drug damage to crops, and ordinary α-naphthalene acetate sodium due to containing 20% organic impurities, In the range of effective use concentration, it will cause drug harm to young leaves, buds and seedlings of plants. Light causes black spots, heavy causes death, and there are some organic impurities that cause harm to the human body and the environment. Any kind of plant growth regulator and pesticide, its purity is related to its effect, such as high-purity sodium α-naphthalene acetate 5ppm(5μg/g) that has a good effect, while ordinary sodium α-naphthalene acetate needs to reach 20ppm(20μg/g) to have an effect.

(3) Good miscibility: high purity α-naphthalene acetate sodium can be used in combination with many plant growth regulators, such as: auxin, sodium nitrophenolate, rooting substances, fungicides, fertilizers, etc.; Ordinary sodium alpha-naphthalene acetate is generally not used in combination.

Functional characteristics

High purity α-naphthalene acetate sodium is a growth hormone plant growth regulator with three major effects. The first is to promote the formation of advental roots and root formation, so it can be used to promote seed roots and rooting, but too much concentration can also inhibit rooting. The second is to promote the expansion of fruit and root tuber, so it can be used as an expansion factor, and field tests have proved that it can greatly increase the yield and improve the quality of monkey peaches, grapes, watermelon, cucumbers, tomatoes, peppers, eggplant, pears, apples. At the same time, it promotes the rapid expansion of cells, and the growth rate of treated solanum produces miraculous changes. The mushroom effect is particularly significant and does not reduce the quality of the fruit. The third is to prevent falling flowers and fruit, with anti-fall function. In addition, it also has the functions of general auxin, such as promoting growth, promoting chlorophyll synthesis, and promoting bud and flower bud differentiation. Therefore, it has the effect of promoting flowering and fruit, promoting luxuriant branches and leaves, increasing yield and improving quality, and improving the resistance of crops to drought, cold and lodging.

Usage method

Method for the use of high purity α-naphthalene acetate sodium

(1) Use alone

High purity sodium α-naphthalene acetate can be separately prepared into water, cream, powder and other dosage forms for promoting growth, rooting, flower preservation, fruit preservation and so on. Dosage for single use: 2 grams to 30 kilograms of water. Special reminder: large quantity is prone to drug damage.

(2) Used in combination with sodium nitrophenolate

High purity α-naphthalene acetate sodium can be combined with sodium nitrophenolate, growth hormone, fungicide, fertilizer, etc. High purity sodium α-naphthalene acetate can be combined with sodium nitrophenolate in Japan, Taiwan has more than 20 years of history, these two components can mutually synergistic, broaden the drug spectrum efficiency, use concentration reduction, both have the effect of sodium nitrophenolate, but also have the effect of sodium α-naphthalene acetate, to achieve twice the result with half the effort.

Application

Action mechanism

High purity sodium naphthalene acetate is an auxin plant regulator, which enters the plant body through the leaves, the tender skin and seeds of plants, and is transported to the parts of vigorous growth (growth points, young organs, flowers or fruits) with nutrient flow. Sodium naphthalene acetate obviously promoted the development of the root tip (root powder). It can induce flowering, prevent falling fruit, form seedless fruit, promote early ripening and increase yield. Meanwhile, sodium naphthalene acetate can also enhance the ability of drought resistance, cold resistance, disease resistance, saline-alkali resistance and dry hot air resistance of plants. High purity sodium naphthalene acetate was tested in Japan, Taiwan and other places, and its use effect was much better than that of ordinary sodium naphthalene acetate.

Identification method

(1) After taking about 0.5g of this product and adding 10ml of water to dissolve, the solution showed the differential reaction between sodium salt and benzoate.

(2) The infrared light absorption spectrum of this product should be consistent with the control spectrum .

Index check

Ph take 1.0g of this product, add 20ml of water to dissolve, add 2 drops of phenolphthalein indicator solution; If it shows light red, add sulfuric acid titration solution (0.05mol/L)0.25ml, the light red should disappear; If colorless, add sodium hydroxide titrant (0.1mol/L)0.25ml, should show light red.

Take this product, dry at 105 ℃ to constant weight, weight loss shall not exceed 1.5%.

Heavy metal Take 2.0g of this product, add 45ml of water, stir continuously, add 5ml of dilute hydrochloric acid, filter, separate 25ml of filtrate, check according to law, the heavy metal content shall not exceed 10 parts per million.

Take 1g of anhydrous sodium carbonate for arsenic salt, spread it on the bottom and around the crucible, then take 0.4g of this product, put it on anhydrous sodium carbonate, wet it with a small amount of water, after drying, burn it with low fire to carbonize it, then burn it at 500 ~600 ℃ to completely ash it, cool it, add 5ml of hydrochloric acid and 23ml of water to dissolve it, it should meet the requirements according to law (0.0005%).

Content determination

Take about 1.5g of this product, accurately weigh it, place it in a separator funnel, add 25ml of water, 50ml of ether and 2 drops of methyl orange indicator liquid, titrate with hydrochloric acid titrant (0.5mol/L), shake with the drops until the water layer is orange-red; Separate the water layer and place it in a tapered bottle with a plug. Wash the ether layer with 5ml water, add 20ml ether into the conical bottle, continue titration with hydrochloric acid titration solution (0.5mol/L), and shake with drops until the water layer shows a continuous orange-red color. Each 1ml of hydrochloric acid titrant (0.5mol/L) is equivalent to 72.06mg of C7H5NaO2.