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Abrasives, in toothpastes

Calcium carbonate is used in food and pharmaceutical appHcations for both its chemical and physical properties. It is used as an antacid, as a calcium supplement in foods, as a mild abrasive in toothpaste, and in chewing gum to name only a few (see EoOD ADDITIVES). [Pg.411]

Domestic and phannaceudcal uses of precipitated CaC03 include its direct use as an antacid, a mild abrasive in toothpastes, a source of Ca enrichment in els, a constituent of chewing gum and a filler in cosmetics. [Pg.121]

Sodium bicarbonate is used as a leavening in breads, as a stomach antacid, as a buffering agent to adjust the acidity or alkalinity of a product, as a mild abrasive in toothpaste, and as an odor absorber. Sodium bicarbonate reacts with acids to release carbon dioxide gas. [Pg.169]

Calcium Calcium is an essential element for humans, especially in maintaining healthy bones and teeth. Calcium is found widely in nature, mainly combined with carbon and oxygen in calcium carbonate. This compound is the main ingredient in rocks such as limestone, chalk, and marble. Coral reefs build up from calcium carbonate exoskeletons that are created by marine animals called corals. Calcium carbonate is used in antacid tablets and as an abrasive in toothpaste. An abrasive is a hard material used to polish, smooth, or grind a softer material. Emery boards and sandpaper are examples of abrasive materials. [Pg.183]

Precipitated Calcium Carbonates Used as an Abrasive in Toothpastes.435... [Pg.473]

PRECIPITATED CALCIUM CARBONATES USED AS AN ABRASIVE IN TOOTHPASTES... [Pg.486]

To illustrate these different kinds of equations, consider the preparation of precipitated calcium carbonate, CaC03. This white, fine powdery compound is used as a paper filler to brighten and retain ink, as an antacid (as in the trade-named Turns), and as a mild abrasive in toothpastes. One way to prepare this compound is to react calcium hydroxide, Ca(OH)2, with sodium carbonate, Na2C03. Let us look at the different ways to write the equation for this reaction. [Pg.129]

Tripoli. TripoH [1317-95-9] is a fine grained, porous, decomposed siHceous rock produced mainly in Arkansas, Illinois, and Oklahoma. It is widely used for polishing and buffing metals, lacquer finishing, and plated products. Since tripoH particles are rounded, not sharp, it has a mild abrasive action particularly suited for polishing. TripoH is also used in toothpastes, in jewelry polishing, and as filler in paints, plastics, and mbber. Rottenstone and amorphous siHca are similar to tripoH and find the same uses. In 1987 the abrasive use of tripoH in the United States totaled 26.6 million tons and was valued at about 3.1 million however, the portion used as a filler totaled 71.1 million tons and had a value of almost 10 million (4). [Pg.10]

The calcium pyrophosphates are utilized primarily as dental abrasives in fluoride-containing toothpastes. Typically, a mixture of P- and y-Ca2P202 achieves a balance of abrasivity and fluoride compatibiUty. [Pg.337]

Several crystalline condensed phosphates may also be formed by the dehydration of monosodium phosphate (MSP). Maddrell s salt exists as Form 11 (high temperature MaddreU, NaPO -ll, insoluble metaphosphate-11) and Form 111 (low temperature MaddreU, NaPO -lll, insoluble metaphosphate-111). Both forms are highly polymerized and difficult (slow) to dissolve in water. Mixtures of the two forms are marketed as a dental abrasive for toothpaste formulations containing soluble fluoride. Maddrell s salt is also used with disodium phosphate as a cheese emulsifying aid. [Pg.338]

Hydrated silica is the abrasive used in gel toothpastes, or in the clear portion of striped toothpastes. It is often used as a secondary abrasive in opaque toothpastes as well. [Pg.240]

The most recognized toothpaste ingredient is probably the class of compounds known as fluorides. Stannous fluoride was the first to be used in toothpaste because, unlike sodium fluoride, it did not lose its effectiveness when combined with the abrasive most common at the time, calcium phosphate. Later, sodium mono-fluorophosphate came into popular use because it too could be used with the common abrasives. [Pg.241]

Most of the world production of phosphates goes into fertilizer, but some is used as detergent builders (Section 7.7). In toothpastes, calcium pyrophosphate has proved effective as a mild abrasive in eliminating tartar, while Na2[FP03], made by reaction of NaF with cyclic sodium metaphosphates (NaP03), is widely used as a fluoridating agent to suppress dental caries (Section 12.3). A minor amount of rock phosphate is used to make elemental phosphorus by reduction with coke in the presence of silica in the electric furnace (see Section 17.7) ... [Pg.186]

Anhydrous dibasic calcium phosphate is used in toothpaste and dentifrice formulations for its abrasive properties. [Pg.93]

Virtually all dentifrice formulations contain abrasive particles, typically composed of amorphous silica, calcium carbonate, alumina or calcium phosphate. The mechanism by which the toothbrush and dentifrice interact to clean the teeth is one of abrasive cleaning. Toothpaste manufacturers thus aim to provide formulations with effective cleaning power, whilst minimising any wear to the underlying substrate. However, in such a system it is inevitable that some degree of abrasivity will be present, as toothpastes without abrasive particles are unable to prevent the build-up of extrinsic stain [12], It is, therefore, important to understand any abrasion a dentifrice product may cause to the hard tissues in the mouth. [Pg.90]

Ashmore H, van Abbe NJ, Wilson SJ The measurement in vitro of dentine abrasion by toothpaste. Brit Dent J 1972 133 60-66. [Pg.102]


See other pages where Abrasives, in toothpastes is mentioned: [Pg.44]    [Pg.26]    [Pg.256]    [Pg.256]    [Pg.256]    [Pg.256]    [Pg.473]    [Pg.486]    [Pg.1554]    [Pg.203]    [Pg.44]    [Pg.26]    [Pg.256]    [Pg.256]    [Pg.256]    [Pg.256]    [Pg.473]    [Pg.486]    [Pg.1554]    [Pg.203]    [Pg.334]    [Pg.342]    [Pg.493]    [Pg.400]    [Pg.299]    [Pg.242]    [Pg.525]    [Pg.251]    [Pg.514]    [Pg.480]    [Pg.493]    [Pg.322]    [Pg.171]    [Pg.97]    [Pg.794]    [Pg.242]    [Pg.525]   
See also in sourсe #XX -- [ Pg.449 ]




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