Propionic acid, calcium salt

Synonyms calcium dipropionate E282 propanoic acid, calcium salt propionic acid, calcium salt. 

Synonyms Calcium dipropionate Propanoic acid, calcium salt Propionic acid, calcium salt Definition Calcium salt of propionic acid Empirical CeHioCa04 Formula Ca(OOCCH2CH3)2 Properties Wh. cryst. or cryst. powd., faint odor of propionic acid sol. in water si. sol. in alcohol m.w. 186.23 m.p. >300C Toxicology LD50 (oral, rat) 3920 mg/kg, (oral, mouse) 2350 mg/kg mod. toxic by ing. irritant TSCA listed... 

Propionic acid - calcium salt CA Index Name ... 

SYNS BIOBAN-C CALCIUM DIPROPIONATE CALCIUM PROPIONATE PROPANOIC ACID, CALCIUM SALT (9CI)... 

Mould and bacteria outgrowth are traditionally inhibited by the use of, propionic acid or salts of propionic acid. Also, acetic acid, sorbic acid, and acid calcium phosphate are used (Seiler, 1985). 

Propionates. Propionic acid [79-09-4], C2H 02, and its calcium and sodium salts ate effective mold inhibitors. They ate particularly useful in yeast-leavened baked products because they do not affect the activity of yeast. In addition to being widely used in baked goods, they ate used as mold inhibitors in cheese foods and spreads (77). 

Various organic acids such as sorbic, benzoic, propionic, acetic and formic acids, have been widely used as preservatives and are normally used as the corresponding sodium, potassium or calcium salts. Such methods are seldom used where the stored produce is destined for human consumption. 

Ethyl-l 3-benzodiazole-5-arsinic acid or 2-Ethylbe z-iminazole-5(6)-arsinic acid is the condensation product from propionic acid and 8 4-di aminophenylarsinic acid when the two are refluxed for one hour, the solution treated ndth charcoal and neutralised to Congo red or litmus. It forms clusters of needles, fairly soluble in cold water or alcohol, readily soluble in dilute mineral acids and alkalis. The calcium salt crystallises from hot aqueous solution in clusters of prisms, soluble in cold water the magnesimn salt is amorphous. 

By bacterial fermentation the calcium salt of lactic acid is decomposed into salts of simpler acids, e.g,y propionic, bulyric and valeric. As an acid lactic acid yields an ethyl ester with ethyl alcohol and as an alcohol it yields, with acetic anhydride, an acetyl derivative. The latter compound results from the putrefaction of muscular tissue, as this contains both lactic and acetic acid. 

For therapeutic purposes, a similar frequently used group of drug compounds is the non-steroidal antiinflammatory drugs (NSAIDs). One of the best known representatives of the aryl acetic acid derivatives in diclofenac and that of aryl propionic acid derivatives ibuprofen. As both have acidic properties, they dissociate while being dissolved and may form salts with amphiphilic properties. Together with appropriate counterions, these amphiphilic organic acids may form lyotropic mesophases with water at even room or body temperature e.g., diclofenac diethylamine or ibuprofen lysinate. Furthermore, some anhy-drates of NSAID, e.g., fenoprofen calcium,exhibit thermotropic mesomorphism after thermal dehydration of the crystalline salt. 

Propionic acid is incompatible with alkalis, ammonia, amines, and halogens. It can be salted out of aqueous solutions by the addition of calcium chloride or other salts. 

Acetylamino)-5[[(2-(hydroxy-ethyDamino] carbonyl]-2,4,6-triiodobenzoic acid 3-Amino-alpha-ethyl-2,4,6-tri-iodobenzene-propanoic acid Alpha-Ethyl-3-hydroxy-2,4,6-triiodobenzene-propionic acid 3-(Acetylethylamino)-2,4,6-tri-iodobenzene-propionicacid 3 - [ [(Dimethylamino)-methylenel amino]-2,4,6-triiodobenzene-propanoic acid Sodium salt Calcium salt... 

Homologues of Acetone.—These compounds may be prepared by the distillation of the calcium salts of the fatty acids. If a mixture of the salts of two acids is used, a ketone is obtained which contains the two radicals present in the acids used. Thus, calcium acetate and calcium propionate yield methyl-ethyl ketone —... 

Calcium ( )-2-(3-phenoxyphenyl) propionate dihydrate Calcium ( )-w-phenoxyhydratropate dihydrate Benzeneacetic acid, a-methyl-3-phenoxy-, calcium salt dihydrate, ( )- BP USP ... 

E282 Calcium propionate Propionic acid salt Preservative... 

Another effect is observed in the case of propionate acids and their sodium salts. At low concentration the hydration is accelerated but at high-retarded. The complexes with Ca ions are formed thus increasing the calcium ions concentration in the solution. This accelerates the decomposition of primary hydrate. At higher concentration the organic anions are adsorbed on the surface of CjS and the calcium propionate is formed. By hampering the hydration process, a-hydroxy acids (for example lactic acid) and their salts have a veiy strong delaying effect. This is the... 

Luprenal . See Polyacrylic acid Lupromag . See Magnesium propionate Luprosil NC 64. See Ammonium propionate Luprosll Salt See Calcium propionate Luprosil Sodium Salt. See Sodium propionate Luprosll Special. See Calcium propionate Luprosil . See Propionic acid Lupulin. See Lupulin (Humulus lupulus)... 

One way of making salts already discussed in this chapter is to react an acid and a base to produce a salt and water. Calcium propionate, which is used to preserve bread, is made by reacting calcium hydroxide and propionic acid, HC3H5O2 ... 

As a preservative propionic acid is used for the protection of acidic media as the acid itself is corrosive one uses the calcium or the sodium salts, free flowable white powders, which are water soluble (solubility in water at lOO C in g/100 ml sodium salt 150 calcium salt 55-8). The main field of application for propionates is the baking industry where they can protect bread and cakes from the growth of moulds and the proliferation of Bacterium mesentericus which causes rope in bread. Addition rates 015-0 3%. Propionates are also used for the protective treatment of cheese. In the EC list of preservatives those cosmetic products which may contain propionic acid and its salts are listed with a maximum authorized concentration of 2% (acid). 

Propionic acid and its salts (sodium, potassium, calcium) (III.6.1.3)... 

Propionic acid (PA) is a colorless, pungent, fuming liquid. The formula for propionic acid is CH3CH2COOH. PA and its calcium, sodium, and potassium salts are important C-3 platform chemicals that are widely used as preservatives in animal feed and human... 

In the UK, when acetic acid is used as the bread preservative, it is added as vinegar. In countries such as the USA, salts such as sodium diacetate and calcium acetate are popularly used. Propionic acid, on the other hand, is generally added as calcium or sodium propionate. 

Despite the comparative effectiveness of the two preservatives, in practice until fairly recently in British bread at least, propionic acid, usually as calcium propionate, was used more commonly than acetic acid and its salts. There are good reasons for this. Firstly, propionic acid has been regarded as more effective against moulds (Ingram et al., 1956). Secondly, calcium propionate as a powder is easier to handle in the bakery environment than a corrosive liquid like vinegar. A third factor is the way in which the two preservatives exert their antimicrobial effect. With propionic acid, it is the undissociated ion that is antimicrobial. With acetic acid, on the... 

Figure 4.9 shows the growth curves that were obtained for the control bread and all treatments related to the action of calcium propionate. Both calcium propionate and propionic acid were effective preservatives at concentrations equivalent to 0.2% calcium propionate or greater. This confirmed that propionate functions as a preservative through a specific ion effect. It can be present as either a salt or as the free acid and it will still work. It does not function only in the free acid form as acetic acid does. 

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