bisulfite
71Sulfonation — La sulfonation est réaction chimique permettant d’introduire un groupement sulfonique – SO3H sur la structure carbonnée d une molécule. C est une des plus importantes réactions de la chimie organique industrielle avec la nitration et la… …
72PAPIER — Depuis son apparition au XIIe siècle dans le monde occidental, le papier est intuitivement associé à l’écriture, à la transmission et à la diffusion de la pensée. Demeuré rare et cher pendant sept siècles, c’est à dire aussi longtemps qu’il est… …
73беленая сульфитная (бисульфитная, сульфатная) целлюлоза — Целлюлоза, подвергнутая отбелке. [ГОСТ 23646 79] Тематики целлюлозно бумажные полуфабрикаты Обобщающие термины волокнистые полуфабрикаты целлюлозно бумажного производства EN bleached sulphite (bisulphite, sulphate) pulp DE gegleichter [Bisulfite …
74metabisulfite — | ̷ ̷ ̷ ̷+ noun Etymology: International Scientific Vocabulary meta + bisulfite : a salt containing the bivalent anion S2O5 obtained by heating a bisulfite called also pyrosulfite …
75Food preservation — Canadian World War I poster encouraging people to preserve food for the winter …
76Mutagenesis — (pronounced /mjuːtəˈdʒɛnɪsɪs/) is a process by which the genetic information of an organism is changed in a stable manner, resulting in a mutation. It may occur spontaneously in nature, or as a result of exposure to mutagens. It can also be… …
77Potassium — (pronEng|pəˈtæsiəm) is a chemical element. It has the symbol K ( la. kalium, from ar. qalīy), atomic number 19, and atomic mass 39.0983. The name potassium comes from the word potash , as potassium was first isolated from potash. Potassium is a… …
78Polymerase chain reaction — PCR redirects here. For other uses, see PCR (disambiguation). A strip of eight PCR tubes, each containing a 100 μl reaction mixture The polymerase chain reaction (PCR) is a scientific technique in molecular biology to amplify a single or a… …
79Phenols — In organic chemistry, phenols, sometimes called phenolics, are a class of chemical compounds consisting of a hydroxyl group ( OH) bonded directly to an aromatic hydrocarbon group. The simplest of the class is phenol also called as carbolic acid… …
80Preservative — A preservative is a natural or synthetic chemical that is added to products such as foods, pharmaceuticals, paints, biological samples, wood, etc. to prevent decomposition by microbial growth or by undesirable chemical changes.Preservatives in… …
