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CAS NUMBER: 9005-25-8
EC NUMBER: 232-679-6
MOLECULAR FORMULA: (C6H10O5)n
Acetylated starch, E1420 in the E number scheme of food additives, is a modified starch.
Acetylated starchs have possessed many diverse applications both in food production and industrial applications.
But in the food industry, the use of Acetylated starchs is limited because of their low shear stress resistance, thermal decomposition, high retrogradation, and syneresis.
Numerous chemical modification techniques have been used to prevent most of these problems and produce Acetylated starchs with improved functional properties.
Acetylated starch, which is the esterification of Acetylated starch polymers with acetyl groups to form starch acetates, is one common starch modification technique.
Acetylated starch in the presence of alkaline agent, such as sodium hydroxide, is used to produce acetylated starches.
The number of acetyl groups incorporated into the Acetylated starch molecule during acetylation depends upon number of factors, such as reactant concentration, starch source, reaction time, and presence of catalyst.
Acetylated starches are extensively used in a large variety of food and non-food applications.
Acetylated starch is an organic esterification reaction with acetic acid.
Acetylated starch introduces an acetyl functional group into a chemical compound.
Acetylated starchs are termed acetate esters or acetates.
Acetylated starch is the opposite reaction, the removal of an acetyl group from a chemical compound.
Acetylated starchs and acetamides are generally prepared by acetylations.
Acetylated starchs are often used in making C-acetyl bonds in Friedel-Crafts reactions.
Acetylated starchs and their equivalents are susceptible to acetylations.
Acetylated starch is a chemical reaction that is called ethanoylation in the IUPAC nomenclature.
Acetylated starch describes a reaction that introduces an acetyl functional group into a chemical compound.
The opposite chemical reaction is called deacetylation Acetylated starch is the removal of the acetyl group.
Acetylated starch is an acyl chloride derived from acetic acid.
Acetylated starch belongs to the class of organic compounds called acyl halides.
Acetylated starch is a colorless, corrosive, volatile liquid.
Acetylated starch appears as a colorless, fuming liquid with a pungent odor.
Density 9.2 lb / gal.
Flash point 40°F.
Vapor, which is heavier than air, irritates the eyes and mucous membranes.
Acetylated starch is an acyl chloride derived from acetic acid.
Acetylated starch belongs to the class of organic compounds called acyl halides.
Acetylated starch is a colorless, corrosive, volatile liquid.
Acetylated starchs formula is commonly abbreviated to AcCl.
Acetylated starch is produced in the laboratory by the reaction of acetic acid with chlorodehydrating agents such as PCl3, PCl5, SO2Cl2, phosgene, or SOCl2.
Acetylated starch is an acid chloride reagent used for acetylation in organic synthesis reactions such as esterification and the Friedel-Crafts reaction.
Acetylated starch has been reported that Acetylated starch can be used as a fluorescence histochemical in combination with formaldehyde to identify tryptophyl-peptide-containing endocrine cells of the hypophysis.
Furthermore, gaseous Acetylated starch can be used in Fourier-transform infrared emission spectroscopy at 248nm, which can detect fragments of HCl, CO, and CH2 in the presence of Ar or O2.
Alternate studies suggest that Acetylated starch can be used as a derivatizing agent for determining high molecular weight alcohols in fish oil.
Acetylated starch is a colorless pungent fuming liquid CH3COCl made by chlorination of acetic acid or its derivatives (as by distilling a mixture of acetic acid and phosphorus trichloride) and used chiefly in preparing acetyl derivatives.
Also known as ethanoyl chloride, Acetylated starch is an "acid chloride" derived from acetic acid. Acetylated starch does not exist in nature, because upon contact with water it hydrolizes into acetic acid and hydrogen chloride.
Acetylated starch is used in acylation processes such as esterification.
Acetylated starch is a radical formed from an organic acid by removal of a hydroxyl group.
Acetylated starch halide is one of a large group of organic substances containing the halocarbonyl group, have the general formula RCO·X, where X is a halogen atom (fluorine, chlorine, bromine, iodine, and astatine) and R may be aliphatic, alicyclic, aromatic, and H etc.
In substitutive chemical nomenclature, their names are formed by adding '-oyl' as a suffix to the name of the parent compound; ethanoyl chloride, CH3COCl, is an example.
The terms acyl and aroyl halides refer to aliphatic or aromatic derivatives, respectively.
Acetylated starch halides are made by replacing the -OH group in carboxylic acids by halogen using halogenating agents.
They react readily with water, alcohols, and amines and are widely used in organic synthetic process whereby the acyl group is incorporated into the target molecules by substitution of addition-elimination sequence called acylation reaction.
Acetylated starch reaction involves substitution by an electron donor (nucleophile) at the electrophilic carbonyl group (C=O).
Common nucleophiles in the acylation reaction are aliphatic and aromatic alcohols, both of which give rise to esters and amines (RNH2) which give amides.
Acetylated starch can function as an acylating agent when it is protonated by a strong acid catalyst as in the direct esterification of an alcohol.
Two common Acetylated starch agents, with the general formula RCOX, are acid halides (X = halogen atom) and anhydrides (X = OCOR).
Acetylated starch reaction that uses an acid chloride in the presence of dilute alkali to acylate the hydroxyl and amino group of organic compounds.
There are also other Acetylated starch agents.
Acetylated starchs are used as very reactive intermediates to prepare carboxylic acid derivatives including anhydrides, esters and amides because of the two strong electron withdrawing chlorine and oxygen on the carbonyl compound, and positive charge carbon accordingly.
Acetylated starch is easy for a weak nucleophile to attack the carbon.
Acid chlorides are also reactive with Gilman reagents to prepare large molecules from smal ones by replacing the halides with an organic group.
Acetylated starch is a clear, corrosive and fuming liquid; melting point of -112 C, boiling point of 51-52 C, refractive Index of 1.3890.
Acetylated starch undergoes violently hydrolysis in presence of atmospheric moisture.
Acetylated starch is soluble in ether, acetone, and acetic acid.
Acetylated starch is prepared by reacting acetic acid with a halogenating agent such as phosphorus(III or V) chloride or sulphur dichloride oxide.
Acetylated starch is widely used as an acetylating agent in the synthesis of fine chemicals, agrochemicals and pharmaceuticals.
The hydrogen atoms replace oxygen atoms in alcohols or nitrogen atoms in amines, which protects amine groups during amino acid synthesis.
Acetylated starch is also used as an intermediate for dyes.
Acetylated starch is also used to determine water in organic liquids.
Acetylated starch is a colourless to light yellow liquid with a pungent and choking odour.
Acetylated starch is highly flammable and reacts violently with DMSO, water, lower alcohols, and amines.
Along with air, acetic chloride may form an explosive mixture.
Acetylated starch is incompatible with water, alcohols, amines, strong bases, strong oxidising agents, and most common metals.
On decomposition when heated, acetic chloride produces carbon monoxide, carbon dioxide, hydrogen chloride, and phosgene.
A colorless, fuming liquid with a pungent odor.
Vapor, which is heavier than air, irritates the eyes and mucous membranes.
Corrosive to metals and tissue.
Acetylated starch can be prepared by chlorination of acetic anhydride in several different ways, by reaction of methyl chloride with carbon monoxide in the presence of catalysts, by reaction ofketene with HCI, or by partial hydrolysis of 1, 1, l-trichloroethane, Acetylated starch hydrolyzes in the presence of water to give acetic acid.
Acetylated starch reacts with ammonia and amines to give acetamides.
Reaction with alcohols gives the corresponding acetate esters.
Acetylated starch will add across unsaturated bonds in the presence ofsuitable catalysts to give halogenated ketones.
Acetylated starch is miscible with benzene, acetone, chloroform, ether, glacial acetic acid and petroleum ether.
Liquid is heavier than water with the vapor being heavier than air.
Acetylated starch can have metathesis reaction with many compounds.
Acetylated starch can bind to the thiol group in the protein, and therefore being toxic to humans.
Acetylated starch is an important kind of acetylation agents with its acylation capability being stronger than acetic anhydride.
Acetylated starch is widely used in organic synthesis, being also the catalyst for the chlorination of carboxylic acids.
Acetylated starch appears as colorless transparent liquid smoke with irritating smell.
Acetylated starch is miscible with ether, acetic acid and benzene.
Acetylated starch, also known as Acetyltributylcitrate, is a colorless liquid organic compound that is used in industry as a plasticizer in the manufacture of nail polish and other cosmetics.
Acetylated starch is prepared by acetylation of tributylcitrate and is considered a potential replacement of DEHP and DINP.
Acetylated starch is a flavouring ingredient and plasticiser used in packaging films for food.
Acetylated starch is a very good plasticizer for PVC and cellulosic derivatives.
Acetylated starch improves light stability and it has good solvating properties for rubber and PVC.
Acetylated starch has good low temperature properties and also is a non-toxic plasticizer, Acetylated starch can be used in food contact applications.
Acetylated starch is used in the following products: cosmetics and personal care products, pharmaceuticals, polymers, washing & cleaning products, adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, finger paints, metal surface treatment products, non-metal-surface treatment products, inks and toners, leather treatment products, lubricants and greases, paper chemicals and dyes, polishes and waxes and textile treatment products and dyes.
Acetylated starch is used in the following areas, formulation of mixtures and/or re-packaging, printing and recorded media reproduction and health services.
Acetylated starch is used for the manufacture of, plastic products, chemicals and food products.
Release to the environment of Acetylated starch can occur from industrial use: in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), of substances in closed systems with minimal release, in processing aids at industrial sites, as processing aid, for thermoplastic manufacture and as processing aid.
Acetylated starch is heat resistant, low temperature resistance, light resistance, water resistance etc.
Acetylated starch is an organic compound that is used as a plasticizer.
Acetylated starch is a potential replacement of DEHP and DINP.
Acetylated starch is a colorless liquid that is soluble in organic solvents.
Acetylated starch is found in nail polish and other cosmetics.
Acetylated starch is prepared by acetylation of tributylcitrate.
Acetylated starch is suitable for the production of food package,children's toy and medical product.
Acetylated starch is allowed to be used as the material of package of meat and toys.
Acetylated starch is a non-toxic, odorless main plasticizer.
Acetylated starch as the main plasticizer, with a strong solubility, oil resistance, light resistance, and a good anti-mildew.
Acetylated starch is compatible with most cellulose, polyvinyl chloride, polyvinyl acetate, etc., and is mainly used as a plasticizer for cellulose resins and vinyl resins.
In children’s toys, with the DOP toxicity data is constantly being found, more and more areas prohibit the use of DOP, and
Acetylated starch non-toxic, tasteless, transparent and good, low water extraction rate, plasticized plastic products through its excellent performance , Good heat-sealing, secondary processing convenience, especially suitable for children’s toys as the main plasticizer use.
In the meat packaging, Acetylated starch non-toxic, can be used as meat packaging materials, and DOP can not be used in high-fat content of food packaging.
And Acetylated starch tasteless, will not cause food odor, the plasticized plastic products through its transparent, good printing performance.
Acetylated starch is a widely used citrate ester.
Because of its pharmacological safety, especially in the medical, pharmaceutical and food related products in the field is particularly satisfactory.
Acetylated starch and polyvinyl chloride, vinyl chloride – vinyl acetate copolymer has excellent compatibility, is their preferred environmentally friendly plasticizer.
Acetylated starch has a good thermal stabilization effect on the resin, which can avoid coloring during processing.
Acetylated starch gives the resin excellent low temperature softness.
Acetylated starch can also be used for vinyl latex.
Acetylated starch for plasticizing nitrocellulose film, can give products better resistance to yellowing and bonding properties with the metal.
Acetylated starch can improve the UV resistance of the resin.
Acetylated starch and DOP compared to the two of the plasticity of PVC considerable, with Acetylated starch made PVC resin paste viscosity should be significantly lower, even after a long period of storage, the viscosity increase is also very small.
At the same time, because of Acetylated starchs gelation temperature is higher than DOP5 ℃, extended resin paste storage period.
USES:
Acetylated starch is a reagent for the preparation of esters and amides of acetic acid, used in the derivatization of alcohols and amines.
One class of Acetylated starch reactions are esterification.
Acetylated starch is a very useful synthetic intermediate.
Acetylated starch is a derivative of acetic acid, a weak acid, used as a reagent in numerous industrial processes.
Acetylated starch is a chemical for acetylation in the synthesis or derivatization of organic compounds.
Acetylated starch is a very useful synthetic intermediate.
Acetylated starch is a derivative of acetic acid, a weak acid, used as a reagent in numerous industrial processes.
Acetylated starch is a chemical for acetylation in the synthesis or derivatization of organic compounds.
Acetylated starch is a kind of acetylating agent, being used as raw materials for pesticides and medicine, or the intermediates for the manufacturing of water treatment agent ethylidene diphosphate.
Acetylated starch can be used for the analysis of reagents as well as used for the preparation of acetyl derivatives and dyes
Acetylated starch can be used for organic synthesis, dyes and pharmaceutical industries
Acetylated starch can be used as the raw materials of pesticides and pharmaceutical as well as the intermediate for the manufacture of water treatment agent ethylene diphosphate.
Moreover, Acetylated starch can also be used for the manufacture of new electroplating complexing agent.
Acetylated starch is an important acetylating agent with the acylation capability being stronger than acetic anhydride.
Acetylated starch is widely used in organic synthesis and dyes.
Acetylated starch is also the catalyst for the carboxylic acid to have chlorination reaction as well as being used for hydroxyl and amino quantitative analysis.
Acetylated starch can be used as raw material for organic synthesis, used in the production of pesticides, pharmaceuticals, new electroplating complexing agent, the catalyst for carboxylic acid to have chlorination, acetylation agent, and other kinds of fine organic synthesis intermediates.
APPLICATION:
-in microencapsulation of probiotic bacterial culture(1)
-as a part of model system in sensory analysis of starch-thickened products(2)
-in fabrication of porous silicon nitride ceramic materials
-Main plasticizer of polyvinyl chloride for food packing and medical products.
-Main plasticizer of vinyl chloride - vinyldene chloride copolymer for foodpacking and precise instrument packing.
-Plasticizer of vinyl chloride - acetate copolymer.
-Plasticizer of sustained-release pharmaceutical tablets.
-Plasticizer of latex adhesives.
-Lubricating oil for surface treatment of tinplate.
-In manufacturing of toys and safety glasses.
PROPERTIES:
-Boiling point: 51°C
-Melting point: -112°C
-Relative density (water = 1): 1.11
-Solubility in water: reaction
-Vapour pressure, kPa at 20°C: 32
-Relative vapour density (air = 1): 2.7
-Flash point: 5°C
PHYSICAL PROPERTIES:
-Boiling point: 52 °C (1013 hPa)
-Density: 1.10 g/cm3 (20 °C)
-Explosion limit: 7.3 - 19 %(V)
-Flash point: 5 °C
-Ignition temperature: 390 °C DIN 51794
-Melting Point: -112 °C
-Vapor pressure: 320 hPa (20 °C)
SYNONYM:
UNII-XLW9XG1719
XLW9XG1719
121684-92-2
acetic acid;(2R,3R,4S,5S,6R)-2-[(2S,3S,4S,5R)-3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol;octadecanoic acid
Sucrose acetate distearate
DTXSID50153338
Acetylated sucrose distearate
