Oxalic acid naturally occurring

Metal complexation in solution can have the effect of increasing the apparent solubility of minerals. A case in point is the oxalic acid—A1 hydroxide system. Oxalic acid, naturally occurring in soils as a product of biological activity, is a relatively strong dicarboxylic acid that dissociates readily ... 

Oxalic acid is poisonous and occurs naturally in a number of plants including sorrel and begonia It is a good idea to keep houseplants out of the reach of small children who might be tempted to eat the leaves or berries... 

Acidolysis is a similar weathering reaction to hydrolysis in that is used to weather minerals, but in this case the source of is not water but organic or inorganic acids. Humic and fulvic acids (discussed in Section 8.3.2), carbonic acid, nitric or sulfuric acid, and low-molecular-weight organic acids such as oxalic acid can all provide H to weather minerals. All of these acids occur naturally in soils in addition nitric and sulfuric acid can be added to soil by acid pollution. The organic acids are prevalent in the... 

O Oxalic acid, HOOCCOOH, is a weak diprotic acid that occurs naturally in some foods, including rhubarb. Calculate the pH of a solution of oxalic acid that is prepared by dissolving 2.5 g in 1.0 L of water. What is the concentration of hydrogen oxalate, HOOCCOO , in the solution ... 

It is a white solid used in removal of certain kinds of stains, in removing calcium ions from solutions, and in tanning leather. It occurs naturally and is toxic. The potassium and calcium salts of oxalic acid are found naturally in cabbage, spinach, and rhubarb leaves, and are also found in the bark of some species of eucalyptus trees. The metabolism of sugar by many species of mold results in the production of oxalic acid. Ingestion of large amounts can cause kidney damage, convulsions, and death. 

Derivation From chloroacetic acid by reaction with sodium hydroxide, or by reduction of oxalic acid. Occurs naturally in sugar cane syrup. 

Oxalic acid a widely occurring compound in nature C—C ... 

By virtue of what is called the law of mass action, the buildup of product itself works against the conversion reaction. Thus, the very buildup of lactic acid or lactate product serves as an inhibitor. (Albeit pyruvic acid is also listed as an inhibitor in the compilations, but which is a reactant for the conversion to lactic acid.) Another inhibitor listed is oxalic acid, a naturally occurring component of such vegetables as spinach and rhubarb, and which becomes toxic in large amounts. The common... 

The inhibition of the enzyme tyrosinase may very well be a key to the control of melanoma, and some of the known inhibitors include eommon substances. Thus, vitamin C, among other common and uncommon substances, has been listed as an enzyme inhibitor for tyrosinase in M.K. Jain s Handbook of Enzyme Inhibitors, 1965-1977 (1982). In addition to ascorbic acid (vitamin C), these other substances include the following halide ion (e.g., from the chloride of common salt, or from iodides and fluorides) butyric acid (from rancid butter) lactic acid (the end product of cancer cell metabolism, found naturally in sour milk products) oxalic acid (ordinarily considered toxic, although it occurs naturally in rhubarb and wood sorrel, etc.) formic acid (a component of ant stings) tyrosine itself and deadly cyanide (which is a chemically bound component of laetrile), as found in almonds (notably bitter almonds), in apricot seeds, and in certain legumes such as beans, etc., although the heat from cooking may drive off the cyanide content. 

Oxalic acid occurs naturally in a number of vegetable products, including spinach, rhubarb, tea, chocolate, oats,... 

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