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Approximately seven tonnes of black liquor are produced in the manufacture of one tonne of pulp. [2] The black liquor is an aqueous suspension of lignin residues, hemicellulose, and the inorganic chemicals used in the process. The black liquor comprises 15% solids by weight of which two thirds are organic chemicals and the remainder are ...
Castor oil is a vegetable oil pressed from castor beans, the seeds of the plant Ricinus communis. [1] The seeds are 40 to 60 percent oil. [2] It is a colourless or pale yellow liquid with a distinct taste and odor. Its boiling point is 313 °C (595 °F) and its density is 0.961 g/cm 3. [3]
Ricin (/ ˈ r aɪ s ɪ n / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis.The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection.
Paper Coating 1) The paper or board 2) The first layer of coating to even out the surface 3) A second layer for an even smoother and whiter surface. Pigments that absorb in the yellow and red part of the visible spectrum can be added. As the dye absorbs light, the brightness of the paper will decrease, unlike the effect of an optical ...
The worldwide production of soda ash in 2005 was estimated at 42 million tonnes, [2] which is more than six kilograms (13 lb) per year for each person on Earth. Solvay-based chemical plants now produce roughly three-quarters of this supply, with the remaining being mined from natural deposits.
WhatsApp messages seen by the BBC reveal how Southport killer Axel Rudakubana had packages sent to a neighbour's home - one of which contained ingredients to make ricin.
The technology entails several steps, both mechanical and chemical. It is the dominant method for producing paper. In some situations, the process has been controversial because kraft plants can release odorous products and in some situations produce substantial liquid wastes. [1] [2] [3]
Swan was advertised as a hand soap used in the kitchen or the bathroom to bathe the baby. A typical advertisement boasted that it was "the white floating soap that's purer than the finest castiles". Swan's print ads were colorful works of art that often featured children, babies, soapsuds, and, of course, a swan. Some people displayed the Swan ...