Substance added to suspensions to increase separation of particles, to prevent settling or clumping
A dispersant or a dispersing agent is a substance, typically a surfactant, that is added to a suspension of solid or liquid particles in a liquid (such as a colloid or emulsion) to improve the separation of the particles and to prevent their settling or clumping.[1]
Dispersants are widely used to stabilize various industrial and artisanal products, such as paints, ferrofluids, and salad dressings. The plasticizers or superplasticizers, used to improve the workability of pastes like concrete and clay, are typically dispersants. The concept also largely overlaps with that of detergent, used to bring oily contamination into water suspension, and of emulsifier, used to create homogeneous mixtures of immiscible liquids like water and oil. Natural suspensions like milk and latex contain substances that act as dispersants.
^Pirrung, Frank O.H.; Quednau, Peter H.; Auschra, Clemens (2002). "Wetting and Dispersing Agents". CHIMIA International Journal for Chemistry. 56 (5): 170–176. doi:10.2533/000942902777680496.
A dispersant or a dispersing agent is a substance, typically a surfactant, that is added to a suspension of solid or liquid particles in a liquid (such...
An oil dispersant is a mixture of emulsifiers and solvents that helps break oil into small droplets following an oil spill. Small droplets are easier to...
floating booms, controlled burns and 1,840,000 US gal (7,000 m3) of oil dispersant. Due to the months-long spill, along with adverse effects from the response...
Corexit (often styled COREXIT) is a product line of oil dispersants used during oil spill response operations. It is produced by Nalco Holding Company...
injection of dispersant directly into oil at the source". Dispersants are said to facilitate the digestion of the oil by microbes. Mixing the dispersants with...
use of dispersants to clean up spills, thus Exxon did not require permission to use them, and that, in fact, Exxon had not had enough dispersant on hand...
done in low wind, and can cause air pollution. Dispersants can be used to dissipate oil slicks. A dispersant is either a non-surface active polymer or a...
poorly soluble drugs in solution form, and in cleanup of oil spills using dispersants. Literature distinguishes two major mechanisms of solubilization process...
efficiency, and hence increased recovery factor. Besides their use as dispersants lignosulfonates are also good binders. They are used as binders in well-paper...
amines. This polymeric compound is known for its excellent adhesive and dispersant properties and is commonly used as an additive in lubricants, fuel, and...
plasticizer, a solvent for paint stripping and resins, and a pigment dispersant. Dimethyl adipate is prepared by esterification of adipic acid with methanol...
used in royal blue top tubes for trace metal testing. EDTA is a slime dispersant, and has been found to be highly effective in reducing bacterial growth...
entered the Gulf waters. 1.8 million US gallons (6,800 m3) of Corexit dispersant was applied. The spill had a strong economic impact on the Gulf Coast's...
with various additives, particularly antiwear additives, detergents, dispersants, and, for multi-grade oils, viscosity index improvers.[citation needed]...
electrostatic dispersion. These additions may be termed reinforcing fibers, or dispersants, depending on their purpose. Polymers are chemical compounds made up...
the polymer to absorb a high amount of water. PAA is widely used in dispersants. Its molecular weight has a significant impact on the rheological properties...
Dispersit SPC 1000 or Dispersit is a dispersant used for oil spills, produced by U.S. Polychemical Corporation. It combines a predominantly oil-soluble...
that the U.S. government will be "employing booms, skimmers, chemical dispersants and controlled burns" to combat the oil spill. By May 1 the oil spill...
and forming. For these applications, plasticizers largely overlap with dispersants. Plasticizers for polymers are either liquids with low volatility or...
decided not to use dispersants in sensitive areas or the coastal fringe where water depth was less than 50 metres (160 ft). Had dispersant been applied from...
Considering the drag on the moving particles due to the viscosity of the dispersant, in the case of low Reynolds number and moderate electric field strength...
1-Amino-2-propanol or monoisopropanolamine, may be used as a pigment dispersant and color fastener in these mulches. Types of mulch which can be dyed...
(320 km) were heavily or moderately oiled with an obvious impact. Chemical dispersant, a surfactant and solvent mixture, was applied to the slick by a private...
chemical dispersant Corexit 9527 on the oil. A total of 493 aerial missions were flown, treating 1,100 square miles (2,800 km2) of oil slick. Dispersants were...
Global Information