The crystal structure of methyl stearate

Abstract

Methyl stearate, C~H35COOCH3, is monoclinic with a=5.61, b=7"33, c=106.6A; fl=l16 ° 47'.The cell contains eight molecules and the space group is A2/a. The carbon chains are arranged in the orthorhombic packing 0_k (101). The molecules form double sheets (dimerization) like the acids. The structure is related to the structure of the B-form of stearic acid apart from the A-centering which permits better molecular interaction.

Solid-phase behavior of several long-chain n-paraffins, esters, and a ketone

“…And finally, Markley [1] also indicates two mp's. We note that the mp of 312.3 K observed in thi s study by means of the decrease in the intensity of the (002) maxim urn is in agreement with the value observed with the optical microscope (311.9 to 312.6 K) and with that found by Francis [15] and by Aleby [10].…”

“…However, there is evidence in the literature of more than one crystalline form. For example, Aleby and von Sydow [10] report two different melting points. Also Simonelli [11] found in a dilatometric study that the data was consistent with a solid-solid phase transtion near the melting point.…”

X‐ray study of hydrogenated jojoba wax

“…Comparisons of the crystallographic dimensions to those of previous single crystal investigations of normal long-chain fatty acid esters are presented in Table II. The esters include methyl, ethyl, and propyl stearate and hexadecyl hexadecanoate (6)(7)(8)(9)(10).…”

Binary freezing point behavior of some saturated and unsaturated fatty acid methyl esters with methyl heptadecanoate

“…Of the ester systems investigated, the ethyl esters have received the most attention due in part to their obvious dimorphic character. Since the methyl esters of the saturated acids are also reported to be dimorphic (6) their binary mixture should be expected to exhibit some of the characteristics of the corresponding ethyl ester systems. The methyl esters, on the other hand, have received almost no attention.…”