Detail of "57-10-3"

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CAS Number:
57-10-3
Name:
Palmitic acid
Molecular Structure:
Formula:
C₁₆H₃₂O₂
Molecular Weight:
256.4241
Synonyms:
Palmiticacid (7CI,8CI);1-Pentadecanecarboxylic acid;Cetylic acid;Edenor C16;Emersol 143;FA 1695;Hydrofol Acid 1690;Hystrene 9016;Kortacid 1695;Kortacid 1698;Loxiol EP 278;Lunac P 95;Lunac P 95KC;Lunac P 98;NAA 160;NSC 5030;Neo-Fat 16;PA 900;Pentadecanecarboxylic acid;Prifac 2960;Pristerene 4934;V 1695;n-Hexadecanoic acid;n-Hexadecoic acid;
EINECS:
200-312-9
Density:
0.893 g/cm³
Melting Point:
61-62.5 °C(lit.)
Boiling Point:
340.616 °C at 760 mmHg
Flash Point:
154.12 °C
Solubility:
insoluble in water
Appearance:
white chips, crystals or powder
Hazard Symbols:
Xi
Risk Codes:
36/38
Safety:
26-37/39 Details
Method:
Crystallization.

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Reference

Effect of genotype, flowering date, and environment on oil content and oil quality of wild sunflower seed: Effect of genotype, flowering date, and environment on oil content and oil quality of wild sunflower seed. Seiler, Gerald J. (Conserv. and Prod. Res. Lab., Bushland, TX 79012, USA). Crop Sci., 23(6), 1063-8 (English) 1983. CODEN: CRPSAY. ISSN: 0011-183X. DOCUMENT TYPE: Journal CA Section: 11 (Plant Biochemistry) The objective of this study was to det. the influence of genotype, flowering date, and environment on oil content and oil quality of maturing wild sunflower. Thirty-eight populations of wild annual sunflower indigenous to areas from 29° to 46° N Lat and 81° to 122° W Long were planted in a randomized field plant plot design on 12 May 1980. Five heads per population per wk were sibbed or interpollinated, and seeds were collected 28 days later for detn. of oil content, fatty acid compn.There are some reagents with their cas registry numbers 57-10-3 and 112-80-1 are used in this study. of oil, seed wt., and test wt. Flowering date and genotypes (populations) significantly affected all dependent variables. Oil content averaged over all populations increased from the first to last sampling. This is opposite the trend found in com. hybrids. Oleic and linoleic acid concns. of the oil decreased and increased, resp., for later flowering dates. Oleic and linoleic acids began at lower and higher levels, resp., in the wild sunflower compared to the com. hybrid but all were about the same concn. at the last samplings. Based on multiple regressions, daylength and Julian day significantly influenced oil content. Linoleic acid was significantly influenced by Julian day, total solar radiation, and max. temp., whereas, oleic acid was influenced only by the latter 2 factors. Oil content and linoleic acid concn. differed significantly in seeds of the original population vs. the seeds grown at a single location. Sibbed and open-pollinated seeds did not differ in total oil content when grown at a single location, but linoleic acid did. Oleic acid concns. of sibbed and open-pollinated seeds of populations grown at a single location did not differ significantly from the seeds of the original populations. .

Variation of cottonseed quality with stratified harvests: Variation of cottonseed quality with stratified harvests. Kohel, R. J.; Cherry, J. P. (Cotton Genet. Res. Lab., College Station, TX 77841, USA). Crop Sci., 23(6), 1119-24 (English) 1983. CODEN: CRPSAY. ISSN: 0011-183X. DOCUMENT TYPE: Journal CA Section: 11 (Plant Biochemistry) Selected constituents of mature cottonseed harvested at weekly intervals (up to 6 wk) from opened bolls of 7 entries were measured during 2 crop years (1976, 1979). The seeds were analyzed for wt., oil, protein, gossypol, and selected fatty acids and amino acids. Major weather differences between years during the periods of flowering and seed maturity caused variations in seed compn. Part of these variations was probably due to weather conditions that affected cottonseed development and differentiation, and energy demands within the cotton plants as the growing seasons progressed. Seed wts. 57-10-3 and 72-19-5 are cas registry numbers of chemicals which are used as reagents here. decreased, oil and free gossypol percentages declined, and proteins increased with progressively later harvest dates during the 2 crop years. In oil, palmitic acid percentages decreased with later harvest dates during both crop years, and oleic and linoleic acid values were variable between seasons and over harvest dates, but these fatty acids followed a consistent reciprocal relationship. The percentages of amino acids in proteins, including lysine, threonine, isoleucine, methionine, and half-cystine, increased during later harvest dates in 1976. Pos. correlations for all amino acids and harvest dates were noted, but these values were significant only for total amino acids (similar to total protein), lysine, and methionine. The amt. of oil and protein in seed decreased with harvest date, but the greatest change was in the amt. of oil. These data provide information on the variation of the compn. within and between crop years, and they indicate the need for addnl. research on factors contributing to variation in cottonseed compn. .

Detail of "57-10-3"

Palmitic acid

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Reference