Sodium polyacrylate

Sodium polyacrylate white powder, odorless and tasteless. Drain extremely wet. It is a polymer compound having both hydrophilic and hydrophobic groups. Can slowly dissolve in water to form a highly viscous transparent liquid. 0.5% solution viscosity of about 1 Pa · s, the viscosity of CMC is substantially equal to 15 to 20 times that of sodium alginate. Heat treatment, neutral salts, organic acids have little effect on the viscosity, the viscosity is increased under basic conditions. Insoluble in ethanol, acetone and other organic solvents. Intense heat to 300 ℃ decomposition. Jiucun viscosity changes little difficult to corrupt. In case of two or more divalent metal ions (such as aluminum, lead, iron, calcium, magnesium, zinc) forming an insoluble salt thereof, causing intermolecular crosslinking gelled precipitate. pH value of 4 or less, polyacrylic acid precipitation. Usage limit]: according to the maximum amount specified in Japan 0.2% (1993). [Toxicological data: 1, half lethal dose (LD50)> 10g / kg (mouse, oral). 2, sub-acute test: The following rat 0.5g / kg / day, for 6 months without exception. Sodium polyacrylate and the role of the main application areas: (a) the food industry sodium polyacrylate thickening, emulsifying, shaping, puffing, stability and other features of its viscosity is about CMC, 15-20 times the alginate can replace the role of CMC, gelatin, agar, sodium alginate, which can reduce production costs, improve food grades and improve taste, extend shelf life. This product is used as a thickener, can be used in a variety of food, the proposed addition of 0.1-0.2% main purposes for example as follows: 1. Pasta industry party (then) plane, noodles, all kinds of special flour, baked goods, and other flour products, raw flour with enhanced adhesion protein, soluble starch and nutrients to prevent leakage, improve dough extension and utilization of raw materials, to improve the taste and flavor of bread and other food to inhibit aging caused by natural drying, party (then) surface, such as fried foods processing, the raw material in the oil very stably dispersed into the dough, lower oil absorption rate, save oil, with about 0.05% -0.12% 2. Beverage industry as complex emulsion stabilizer ingredient component, can replace some melon music bean gum, CMC, xanthan gum, gelatin, etc., play a reinforcing effect, reduce the role of cost. 3. Meat industry have caused meat used in the manufacture, improve the viscoelastic and elongation protein fibers. Increase sensuality and reduce costs. 4. Other sweet potatoes, corn, oats, potatoes, etc. noodles, vermicelli, vermicelli products, improve muscle strength products, by Naizhu: jam, tomato Sauce, jelly, pudding, ice cream, sauces and soy sauce thickening and stabilizing; frozen foods , aquatic products fresh "glaze"; sugar, salt, beverages, liquor clarifier turbidity. (Ii) Cosmetics industry since sodium polyacrylate thickener in cosmetics, dispersion, suspension, stability and so on. It facilitates cosmetics thickening, foaming, stability, emulsification, dispersion, adhesion, water retention, and deposition play performance. (C) add toothpaste toothpaste manufacturing sodium polyacrylate can play a more significant bond, forming function, due to replace the sodium polyacrylic good uniformity, it is slip out of toothpaste seems bright, delicate, moisturizing, Solid incense, washable and high temperature and other effects. (4) (the smoke) manufacturing sodium polyacrylate can play grass production (smoke) grass sheet bonding effect on reducing (smoke) grass costs have a certain effect. In addition, it can also be used as cigarette paper binder. (E) pharmaceutical manufacturing sodium polyacrylate in the medical (drug) industry as a drug slurry thickener, stabilizer, and a liquid and ointment base is added in an amount of drugs: 0.1-0.2% (f) feed on eel , shrimp, turtles, fish, chickens, pigs and all kinds of feed, increase sticky commander, not gelatinized in water, fish and all kinds of incremental, fertilization effect. (Vii) paper, textiles, sugar, environmental protection, building materials, agricultural sector is widely used quality standard Japanese standard, 19921, Arsenic (As2O3 dollars) ≤4ug / g 2, heavy metal ≤20ug / g 3, sulfate (in H2SO4 meter) ≤0.48% 4, 5 within the limits of transparency, the residual monomer ≤1% 6, oligomers (degree of polymerization of 1000 or less) ≤5% 7, loss on drying (105 degrees, 4h) ≤10% 8, burning The residue ≤75% conventional identification methods: Take a sample 0.2g, add water 100ml, stir well to dissolve, as the sample solution, the following test. 1, take the sample solution 10ml, add calcium chloride test solution (ts-57) 1ml, shake, shall immediately produce a white precipitate. 2, take the sample solution 10ml, plus magnesium sulfate test solution (ts-135) 1ml, shake, shall immediately produce a white precipitate. 3, take the sample solution 10ml, plus 4% cobalt chloride solution 1ml, plus ammonium chloride test solution (ts-20) 2-3 drops, shake, shall immediately produce light red precipitate. Filtered off, the precipitate was dried and purple. 4, following a sodium salt residue on ignition test (IT-28) were positive. Quality indicators: 1, the free base sample taken 0.2g, add water 60ml, stir to dissolve, add calcium chloride test solution (ts-57) 3ml, heated on a water bath for about 20min, cooled and filtered. Residue was washed with water, the combined washings and filtrate, add water to 100ml, as the sample solution. Whichever 50ml, plus phenolphthalein test (ts-167) 2 drops, may not appear red. 2, sulfate take the above "free base" Test sample solution 20ml, dilute hydrochloric acid test solution (ts-117) 1ml, as the sample solution, and then press the GT-30 Spectroscopy. 3. Heavy metals residue on ignition below, 0.2ml hydrochloric acid and nitric acid 1ml, evaporated on a water bath, plus dilute hydrochloric acid test solution (ts-117) 1ml and water 15ml, heated and dissolved. After cooling, add phenolphthalein test solution (ts-167) 1 drop of ammonia solution was added dropwise (ts-13) to the reddish solution, dilute acetic acid test solution (TS-2) 2ml, filtered, if necessary, add water to volume to 50ml, plus sodium sulfide test solution (ts-232) 2 drops, placed after 5min, coloring No deeper than the standard. Standard is to take the lead standard solution (ts-128) 2ml, add dilute acetic acid test solution 2ml, water volume to 50ml, add 2 drops of sodium sulfide test solution, placed coloration after 5min. 4, the residual monomer in 300ml iodine bottle accurately weighed sample of approximately 1g, add water 100ml, shaking occasionally, for about 24h, to dissolve. Plus potassium bromate - bromide test solution (ts-181) 10ml, shake well, then quickly add hydrochloric acid to about 10ml, immediately stopper, after shaking well, in the upper part of the injection of iodine bottle potassium iodide solution (ts-192) 20ml, in dark place 20min, Songse so iodide test solution flows into the bottle to strive immediately plugged after sufficient shaking, starch test solution (ts-235) as an indicator, with 0.1mol / L sodium thiosulfate solution titration. A blank test in the same manner. Press calculation: 5, oligomer sample taken 2g, add water 200ml, shaking occasionally, for about 24h, to dissolve. With stirring was added dropwise 10mol / L hydrochloric acid 50ml, under stirring, in a water bath at about 40 degrees warmed 30min, placed 24h. The resulting precipitate was filtered and the filtrate was added 1 drop of phenolphthalein test solution (ts-167), 40% sodium hydroxide solution was added to the filtrate after the reddish, 1/30 dilute hydrochloric acid was added dropwise to the red color disappeared. Adding water 200ml, calcium chloride was added dropwise with stirring the test solution (ts-57) 25ml, was heated with stirring in a water bath at about 40 degrees 30min. With a known weight G4 glass crucible precipitate suction filtered, then the filter residue was rinsed each time with 30ml of water three times, dried at 105 degrees 3h, press Calculated: oligomer (%) = residue (g) × 1.0324 / sample sample size (g) × 100 packing and shipping (1) This product is cardboard drum lined with plastic bags, 25 kg per barrel. (2) according to customer requirements can use other packaging. (3) according to customer requirements, formulated as 0.1% aqueous products. (4) The products in transit should rain, moisture, avoid piling up in the sun. Should be stored at room temperature, maintain ventilation to prevent exposure. External drum lined with plastic sealed bag, net weight 20 kg. Storage and transportation to avoid the sun and rain, moisture and heat. Use (1) when the product is dissolved, the product should be thrown into even agitated water, proper heating (≤60 ℃) can accelerate the dissolution. (2) dissolving the water quality of the product to the neutral salt-water is appropriate. (3) through a small test to determine the best dosage of the product. (4) products are hygroscopic, should be sealed stored in a cool dry place, storage temperature not higher than 35 ℃. (5) The product avoid scattered on the ground, falling on the ground should be cleaned immediately to prevent moisture absorption after the product so that the ground becomes slippery.