With the outbreak of the epidemic until the release of the seal, carbomer raw materials have always been an important raw material in short supply, and it is mainly used in daily chemical products. Because of the need for epidemic prevention, hand sanitizer is widely used, and carbomer is an important raw material for this product. Therefore, the shortage of carbomer caused hand sanitizer to be out of stock. Kaboom was crazy overnight. People everywhere asked about Carbomer, and the price could have been soaring, but it was not satisfactory, and there was an unprecedented phenomenon of pricelessness. This has caused some black-hearted businesses to act as shoddy. The quality of Carbomer's products was once suspected, and the price difference between the middlemen was raised, causing great losses to those companies that really needed Carbomer's raw materials.
Under this severe situation, it is really very difficult to find a reliable and quality-guaranteed carbomer manufacturer. Because people's inertial thinking always feels that the wolf is not worth believing, even if you really meet you, there will be all kinds of distrust and suspicion. It just so happened that we encountered it-Desheng Technology, a company that relies on products to speak. It will not talk nonsense with you, send samples directly for testing. You can tell if it is true or not. No amount of exquisite language has the experience of real product effects, which is convincing.
[Properties] White loose powder; with characteristic slight odor; with moisture attracting property.
[Identification] Take 0.1g of this product, disperse in 20ml of water, and add 0.4ml of 10% sodium hydrochloride solution to form a gel.
[an examination]
Acidity: Take 0.10g of this product, disperse and swell evenly in 10ml of water, check according to law, the pH value should be 2.5~3.5.
Viscosity: Take 0.5g of this product and disperse it evenly in 98ml water. After it is fully swelled, mix well, adjust the pH value to 7.3~7.8 with 15% sodium hydroxide solution (test with precision pH test paper), add water to 100ml, and mix well (Avoid generating bubbles), measured according to law, the dynamic viscosity at 25℃ should be 15~30Pa·s.
Benzene: Take about 1g of this product, accurately weigh it, place it in a test tube with a stopper, add 10.0ml of p-xylene, shake to disperse the product, add 10.0ml of 0.1mol/L sodium hydroxide solution, and shake for 1 hour with a close stopper , Take the supernatant as the test solution. Take an appropriate amount of benzene, accurately weigh it, and add p-xylene to make a solution of 10 µg per 1 ml as a reference solution. Precisely measure 1µl each of the test solution and the reference solution, and determine according to gas chromatography (Appendix ⅤE), using a 3m glass column, the support is 201 red support (60-80 mesh), and dinonyl phthalate Mixed with the same amount of organic bentonite as a fixing solution, the coating concentration is 10%, and the column temperature is measured at 100°C. Benzene must not exceed 0.01%.
Loss on drying: Take this product and dry it under reduced pressure at 80°C for 1 hour. The weight loss should not exceed 2.0%.
Residue on ignition: Take 1.0g of this product and inspect according to law. The remaining residue shall not exceed 2.0%.
Heavy metal: Take the residue left under the item of residue on ignition and inspect it according to law, and the content of heavy metal shall not exceed 20 parts per million.
[Assay] Take about 0.4g of this product, accurately weigh it, and disperse it evenly in 400ml of water, stir to dissolve it, and titrate with sodium hydroxide titrant (0. 25mol/L) according to the potentiometric titration method (Appendix ⅦA). At the end, stir for at least 2 minutes after each drop). Each 1ml of sodium hydroxide titrant (0.25mol/L) is equivalent to 11.25mg of -COOH.
Desheng has passed numerous hurdles and tests in production, and only then has the current Carbomer 940 boutique, which is white and flawless in powder form and crystal clear in gel liquid.