Disodium pyrophosphate
Encyclopedia
Disodium pyrophosphate or sodium acid pyrophosphate is a buffering
and chelating agent
, with many food and industrial uses. It is polyvalent, and acts as a Lewis base, so is effective at binding polyvalent cations.
substance for food use. It is used in canned seafood to maintain color and reduce purge during retorting. Retorting achieves microbial stability with heat. It is an acid source for reaction with baking soda to leaven baked goods. In cured meats, it speeds the conversion of sodium nitrite to NO2− by forming the HONO intermediate, and can improve water holding capacity. Disodium pyrophosphate also is found in frozen hash brown
s and other potato products, where it is used to keep the color of the potato
es from darkening
.
treatment, it can be used to remove iron
stains on hides during processing. It can stabilize hydrogen peroxide
solutions against reduction; it can be used with sulfamic acid
in some dairy applications for cleaning, especially to remove soapstone. When added to the scalding water, it facilitates removal of hair and scurf
in hog slaughter and feathers and scurf in poultry slaughter. In petroleum production, it can be used as a dispersant
in oil well drilling muds.
Buffering agent
A buffering agent is a weak acid or base used to maintain the acidity of a solution at a chosen value. The function of a buffering agent is to prevent a rapid change in pH when acids or bases are added to the solution. Buffering agents have variable properties—some are more soluble than others;...
and chelating agent
Chelation
Chelation is the formation or presence of two or more separate coordinate bonds between apolydentate ligand and a single central atom....
, with many food and industrial uses. It is polyvalent, and acts as a Lewis base, so is effective at binding polyvalent cations.
Food uses
Sodium acid pyrophosphate is a GRASGras
Gras is a commune in the Ardèche department in southern France.-Population:-References:*...
substance for food use. It is used in canned seafood to maintain color and reduce purge during retorting. Retorting achieves microbial stability with heat. It is an acid source for reaction with baking soda to leaven baked goods. In cured meats, it speeds the conversion of sodium nitrite to NO2− by forming the HONO intermediate, and can improve water holding capacity. Disodium pyrophosphate also is found in frozen hash brown
Hash brown
Hash browns or hashed browns are a simple potato preparation in which potato pieces are pan-fried after being shredded, julienned, diced, or riced. In some cultures, hash browns or hashed browns can refer to any of these preparations, while in others it may refer to one specific preparation. In...
s and other potato products, where it is used to keep the color of the potato
Potato
The potato is a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family . The word potato may refer to the plant itself as well as the edible tuber. In the region of the Andes, there are some other closely related cultivated potato species...
es from darkening
Enzymatic browning
Browning is the process of becoming brown, especially referring to food. Browning foods may be desirable, as in caramelization, or undesirable, as in an apple turning brown after being cut...
.
Other uses
In leatherLeather
Leather is a durable and flexible material created via the tanning of putrescible animal rawhide and skin, primarily cattlehide. It can be produced through different manufacturing processes, ranging from cottage industry to heavy industry.-Forms:...
treatment, it can be used to remove iron
Iron
Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element forming the planet Earth as a whole, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust...
stains on hides during processing. It can stabilize hydrogen peroxide
Hydrogen peroxide
Hydrogen peroxide is the simplest peroxide and an oxidizer. Hydrogen peroxide is a clear liquid, slightly more viscous than water. In dilute solution, it appears colorless. With its oxidizing properties, hydrogen peroxide is often used as a bleach or cleaning agent...
solutions against reduction; it can be used with sulfamic acid
Sulfamic acid
Sulfamic acid, also known as amidosulfonic acid, amidosulfuric acid, aminosulfonic acid, and sulfamidic acid, is a molecular compound with the formula H3NSO3...
in some dairy applications for cleaning, especially to remove soapstone. When added to the scalding water, it facilitates removal of hair and scurf
Dandruff
Dandruff is the shedding of dead skin cells from the scalp . Dandruff is sometimes caused by frequent exposure to extreme heat and cold. As it is normal for skin cells to die and flake off, a small amount of flaking is normal and common; about 487,000 cells/cm2 get released normally after...
in hog slaughter and feathers and scurf in poultry slaughter. In petroleum production, it can be used as a dispersant
Dispersant
A dispersant or a dispersing agent or a plasticizer or a superplasticizer is either a non-surface active polymer or a surface-active substance added to a suspension, usually a colloid, to improve the separation of particles and to prevent settling or clumping...
in oil well drilling muds.