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MORFLEX MSC
MONOSTEARYL CITRATE
Monostearyl Citrate (MSC) is a mixture of mono- and distearyl citrate esters which show
utility as an oil-soluble chelating agent. The long carbon chains render it soluble in a
variety of oils while the free carboxyl groups confer the chelation effect.
In many cases the shelf life of oils may be poor owing to the presence of trace amounts
of metals such as iron. In these cases MSC serves as a stabilizer through chelation of the
metal.
In other cases poor shelf life may result from other causes in addition to the trace
metal. In these cases MSC may act synergistically with an antioxidant to stabilize the
oil. The suggested use level is in the range of 0.2 - 0.5%.
In addition to the chelation effect there are a number of other possible uses for
stearyl citrate mixtures as indicated in the Code of Federal Regulation Vol. 21 noted
below:
| STEARYL CITRATE |
| 182.685 |
Generally recognized as safe as a sequestrant up to 0.15% |
| 582.6851 |
Generally recognized as safe as a sequestrant in animal feed up to 0.15% |
| MONOSTEARYL CITRATE |
| 181.27 |
Mono-, di- and tristearyl citrates granted prior sanction for use as plasticizers in
the manufacture of food-packaging materials |
| 175.300 |
Plasticizer, resinous and polymeric coatings |
| 175.380 |
Xylene-Formaldehyde resins condensed with 4,4' - isopropylidenediphenol
epichlorohydrin epoxy resins |
| 175.390 |
Zinc-silicon dioxide matrix coatings |
| 176.170 |
Components of paper and paperboard in contact with aqueous and fatty foods |
| 177.1210 |
Closures with sealing gaskets for food containers |
| 178.3910 |
Surface lubricants used in the manufacture of metallic articles |
| GENERAL INFORMATION |
| CAS Registry Number |
1337-33-3 |
| SPECIFICATIONS |
| Neutralization Number (mg KOH/g sample) |
100-140 |
| Saponification* Number (mg KOH/g sample) |
140-170 |
| Melting Point, °C |
47 Minimum |
| Moisture, wt % |
0.5 Maximum |
| Solubility Test |
Clear Solution |
*Corrected for Neutralization Number
| TYPICAL PROPERTIES |
| Appearance |
Waxy solid |
| Specific Gravity @ 85°C |
0.92 |
| Flash Point, C.O.C., °F |
>400 |
| Solubility @ 25°C, % w/w |
| Olive Oil |
~1.0 |
| Safflower Oil |
~1.0 |
| Corn Oil |
~1.0 |
| Peanut Oil |
~1.0 |
| Vegetable Oil |
~1.0 |
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citrate,acetyltriethyl,citrates,tributyl,acetyltributyl,esters,acetyltrihexyl,butyryltrihexyl,Morflex,ethyl,monostearyl,DEET,plasticizer,low
toxicity,Citroflex A-4,Citroflex B-6,citric acid esters,Insect Repellent,benzyl
benzoate,dimethyl adipate,dibutyl sebacate,benzyl acetate,methyl
benzoate,diethyl oxalateMonostearyl Citrate (MSC) is a mixture of mono- and
distearyl citrate esters which show utility as an oil-soluble chelating agent.
The long carbon chains render it soluble in a variety of oils and the free
carboxyl groups confer the chelation effect.
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