(Ph. Eur. monograph 2867)<\/p>\n
Product obtained by esterification of isostearic acid (regioisomers mainly of octadecanoic acid, a complex mixture of branched and straight-chain fatty acids) with isopropyl alcohol. The monograph applies to isopropyl isostearate for
\ncutaneous use.<\/p>\n
Clear, colourless or pale yellow liquid.<\/p>\n
Practically insoluble in water, miscible with ethanol (96 per cent) and with fatty oils.<\/p>\n
About 11 mPa\u00b7s at 20 \u00b0C.<\/p>\n
About 0.866 at 20 \u00b0C.<\/p>\n
About 1.447 at 20 \u00b0C.<\/p>\n
A. Infrared absorption spectrophotometry (2.2.24).<\/p>\n
Comparison: isopropyl isostearate CRS.<\/p>\n
An additional weak absorption band at 1780 cm may be present.<\/p>\n
B. Saponification value (see Tests).<\/p>\n
C. Composition of fatty acids (see Tests).<\/p>\n
The solution is not more intensely coloured than reference solution Y7<\/sub> (2.2.2, Method II).<\/p>\n Dissolve 10.0 g in ethanol (96 per cent) R and dilute to 20 mL with the same solvent.<\/p>\n Maximum 1.0, determined on 20.0 g.<\/p>\n Maximum 3.0, determined on 3.0 g.<\/p>\n Maximum 5.0.<\/p>\n 165 to 180, determined on 2.0 g.<\/p>\n Use the mixture of calibrating substances in Table 2.4.22.-1.<\/p>\n Composition of the fatty-acid fraction of the substance:<\/p>\n \u2014 sum of the contents of the fatty acids eluting between palmitic acid and stearic acid: minimum 65.0 per cent;<\/p>\n \u2014 sum of the contents of myristic acid, palmitic acid and stearic acid: maximum 11.0 per cent.<\/p>\n Maximum 0.1 per cent, determined on 5.00 g.<\/p>\n Maximum 0.1 per cent, determined on 1.0 g.<\/p>\n In an airtight container.<\/p>\n","protected":false},"excerpt":{"rendered":" (Ph. Eur. monograph 2867) DEFINITION Product obtained by esterification of isostearic acid (regioisomers mainly of octadecanoic acid, a complex mixture of branched and straight-chain fatty acids) with isopropyl alcohol. The monograph applies to isopropyl isostearate for cutaneous use. CHARACTERS Appearance Clear, colourless or pale yellow liquid. Solubility Practically insoluble in water, miscible with ethanol (96…<\/p>\n","protected":false},"author":2,"featured_media":15736,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[174],"tags":[],"class_list":["post-15734","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medicinal-substances"],"acf":[],"_links":{"self":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/15734","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/comments?post=15734"}],"version-history":[{"count":2,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/15734\/revisions"}],"predecessor-version":[{"id":15739,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/15734\/revisions\/15739"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media\/15736"}],"wp:attachment":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media?parent=15734"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/categories?post=15734"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/tags?post=15734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Acid value (2.5.1)<\/h4>\n
Iodine value (2.5.4, Method B)<\/h4>\n
Peroxide value (2.5.5, Method B)<\/h4>\n
Saponification value (2.5.6)<\/h4>\n
Composition of fatty acids (2.4.22, Method B)<\/h4>\n
Water (2.5.12)<\/h4>\n
Sulfated ash (2.4.14)<\/h4>\n
STORAGE<\/h2>\n