Search results
Results from the WOW.Com Content Network
Super hygroscopic polymer films composed of biomass and hygroscopic salts are able to condense moisture from atmospheric humidity. [16] By implementing rapid sorption-desorption kinetics and operating 14–24 cycles per day, this technique produced an equivalent water yield of 5.8–13.3 L kg −1 of sustainable raw materials, demonstrating the ...
[1] Its p K a value in water cannot be accurately determined but in acetonitrile it has been estimated as −0.10 and in 1,2-dichloroethane −12.3 (relative to the p K a value of 2,4,6-trinitrophenol ( picric acid ), anchored to zero to crudely approximate the aqueous p K a scale [ 2 ] ), making it more acidic than triflic acid (p K a MeCN = 0 ...
Primary efflorescence is named such, as it typically occurs during the initial cure of a cementitious product. It often occurs on masonry construction, particularly brick, as well as some firestop mortars, when water moving through a wall or other structure, or water being driven out as a result of the heat of hydration as cement stone is being formed, brings salts to the surface that are not ...
Cgingold 04:04, 1 November 2006 (UTC) I have added a reference to the list of hygroscopic substances which looks to be the source of most of the original list. I have removed Diesel Fuel from the list of hygroscopic substances. Disel Fuel as per ASTM standard is allowed 200mg water per 1kg of fuel [1]. This is a tiny amount, indeed large ...
Table 1: Critical relative humidities of pure salts at 30°C. Mixtures of salts usually have lower critical humidities than either of the constituents. Fertilizers that contain Urea as an ingredient usually exhibit a much lower Critical Relative Humidity than Fertilizers without Urea. Table 2 shows CRH data for two-component mixtures: ---
Also, capsules that contain liquid or oil may deteriorate more quickly than those that don’t. Is it safe to take expired vitamins? Taking expired vitamins is generally considered safe—but ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A humectant / h juː ˈ m ɛ k t ən t / is a hygroscopic (water-absorbing) substance used to keep things moist. They are used in many products, including food, cosmetics, medicines and pesticides. When used as a food additive, a humectant has the effect of keeping moisture in the food. [1]