[EMERY FACTS] - C&EN Global Enterprise (ACS Publications)

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EMERYFA CT S New

EMERSOL Palmitic Acids Two new Emersol Palmitic Acids have been added to Emery's Fatty

HIGH LINOLEIC, LOW LINOLENIC ACID

Acid line under the designations Emersol 142 (80%) and Emersol 144 (90%). Along with Emersol 140 (70%), they provide a wider choice of high-purity palmitics to best meet your application requirements. And, their extremely low I.V., light color, and low unsaponifiable content assure you that they are of the same unsurpassed high quality as aft

Through special processing of vegetable fatty acids, Emery

Emery fatty acids. Use them in esters, soaps and other chemical syn-

produces a group of commercial linoleic acids (di-unsaturated)

thetics. Also in emulsifiers, gelling agents, wetting agents, plasticizers

of high I.V., but which contain only small quantities of linolenic acid (tri-

and lubricants. See the accompanying chart for complete specifications

unsaturated). In comparison, unsaturated acids from linseed oil contain

and compositions. And for the whole story on these new Emersol

greater proporations of linolenic acid, which in many cases is undesirable.

Palmitic Acids write for Technical Bulletin 230B, "New Saturated Fatty

Emersol Linoleic Acids are useful in a variety of applications, the most

Acids From Emery."

important involving polymerization or "drying". These include epoxy ester coatings, alkyd finishes, printing inks, putty and caulking compounds. Maximum Color

In the surface coatings field the ratio of low linolenic to linoleic content is especially important. High proportions of linolenic acid result in yellowing of films. In whites or pastels, particularly, after-yellowing (yellowing of film

Max. Color Stability*

Photo. Index

Lovibond 5*/«" (Y/R)

Photo. Index

Emersol 140 Palmitic Acid 70»

3/0.3

1/0.3

17/2.6

Emersol 142 Palmitic Acid 80*

3/0.3

1/0.5

3/0.3

1/0.5

Emersol 144 Palmitic Acid 90

upon aging) interferes with color match and thus decreases the performance of the paints. Since Emersol Linoleic Acids contain only small amounts of linolenic acid, such film after-yellowing is minimized. Yet, their high

Emersol 140 Palmitic Acid 70«

polyunsaturated content (linoleic) provides fast drying times.

Emersol 144 Palmitic Acid 90

Emersol 142 Palmitic Acid 80»

Myristic

Perttadecanoic

CHHMO*

CISHMOÎ

3 4.5 3

0.5

Lovibond 5 1 /*" (Y/R)

6/2



__

12.5/3

4/1.5

Saturated Acids Palmitic Margaric CieHîîOî C17H34O}

70 79.5

Titer °C

All Emersol Linoleic Acids are low-titer (5°C), liquid fatty acids possessing light colors (4 max. Gardner), and low unsaponifiable contents (1%). They are carefully controlled during processing to assure uniformity. Emersol 315, containing approximately 62 per cent linoleic acid, is the purest grade

Iodine Value (Wijs)

Acid Value

2 max.

209-214

Sap. Value

Emersol 140 Palmitic Acid 70'

53.3-55.5

Emersol 142 Palmitic Acid 80*

55.7-57.2

1 max.

212-216

212-217

Emersol 144 Palmitic Acid 90

58-61

0.5 max.

217-220

218-221

» 67% MINIMUM PALMITIC CONTENT

24.5

16 6

1

91

Emersol Linoleic Acids can also be useful in jellied soaps where a hard jell is desired.

Stearic CiiHaeOj

ι

Unsaturated Acids Oleic CuH3