Hydriertes Rizinusöl
INCI-Bezeichnung: Hydrogenated Castor Oil. Auch: Rizinuswachs, Gehärtetes Rizinusöl.
Veröffentlichte Werte
| Verseifungszahl | 176–182 mg KOH/g |
| Vom Rechner verwendet | 179,0 mg KOH/g (Mittelwert) |
| VZ für NaOH | 0,1276 g/g |
| Jodzahl | ≤ 5 g I₂/100 g |
| INS (VZ − JZ) | 174 |
| Schmelzpunkt | 83–88 °C |
| Unverseifbare Anteile | — |
Eine Seife aus 100 % Hydriertes Rizinusöl
Übliche Eigenschaften, summiert aus den Fettsäuregruppen; eine Seife aus einem einzigen Öl ist ein Bezugspunkt, kein Rezept.
Fettsäureprofil
| Fettsäure | Veröffentlichte Spanne, % | Verwendet | |
|---|---|---|---|
| Palmitinsäure | C16:0 · gesättigt | ≤ 2 | 2,0 |
| Stearinsäure | C18:0 · gesättigt | 7–14 | 10,5 |
| Arachinsäure | C20:0 · gesättigt | ≤ 1 | 1,0 |
Woher diese Zahlen kommen
Die mit Quellen belegten Anmerkungen unten und die Titel der zitierten Dokumente bleiben in ihrer Originalsprache. Eine übersetzte Quellenangabe lässt sich nicht nachschlagen, und eine übersetzte fachliche Zusammenfassung ist nicht mehr die Zusammenfassung, die anhand des Dokuments geprüft wurde.
Text between the "Ph Eur" markers is the Ph. Eur. monograph. Identification A melting point (2.2.14) 83-88 C; Tests: acid value max. 4.0, hydroxyl value 145-165, iodine value max. 5.0, composition of the fatty-acid fraction (2.4.22, Method A; 12-hydroxystearate peak corrected with a relative correction factor). No saponification value and no unsaponifiable test. The BP 2013 text of the same monograph (https://www.drugfuture.com/Pharmacopoeia/BP2013/data/8025.html) prints the same limits.
Melting range (Class II <741>) 85-88 C; free fatty acids NMT 11.0 mL of 0.1 N NaOH for 20 g; hydroxyl value 154-162; iodine value NMT 5; saponification value 176-182 (used for sapKohMgPerG). No fatty-acid composition. The page scan of the same monograph on the same mirror (https://www.drugfuture.com/Pharmacopoeia/usp35/PDF/1744-1744%20Hydrogenated%20Castor%20Oil.pdf) prints "Official from May 1, 2012" and the same values (its text layer carries any limit signs as U+2264, which pdftotext keeps only with -enc UTF-8).
Melting range (Class II <741>) 85-88 C, iodine value NMT 5, saponification value 176-182, hydroxyl value 154-162, free fatty acids NMT 11.0 mL of 0.1 N NaOH - unchanged from USP 35-NF 30; the page marks the deletion of the heavy-metals test "(Official 1-Dec-2015)".
Chemical properties table: melting point (USP 741) 85-89 C; acid value (USP 401) 3 maximum mg KOH/g; saponification value (USP 401) 174 minimum mg KOH/g; iodine value (USP 401) 3 maximum g/100g. INCI, CAS and EINECS printed in the regulatory block.
Linked from the producer page https://www.itoh-oilchem.co.jp/product-series/products02/. Table columns: colour (Gardner), melting point (C), acid value, saponification value (mg KOH/g), iodine value (g I2/100g), hydroxyl value (mg KOH/g). No composition.
Ph. Eur. monograph 1497, printed in BP 2024 (Ph. Eur. 11.3 update) as 'Hydrogenated Castor Oil': fatty oil obtained by hydrogenation of Virgin castor oil or Refined castor oil or a mixture of both, consisting mainly of the triglyceride of 12-hydroxystearic (12-hydroxyoctadecanoic) acid. Melting point (2.2.14): 83 C to 88 C; acid value max. 4.0; hydroxyl value 145 to 165; iodine value max. 5.0. Composition of the fatty-acid fraction (GC, 2.4.22 Method A, per cent m/m): palmitic acid max. 2.0 %; stearic acid 7.0-14.0 %; arachidic acid max. 1.0 %; 12-oxostearic acid max. 5.0 %; 12-hydroxystearic acid 78.0-91.0 %; any other fatty acid max. 3.0 % each. Not mapped (no schema key): 12-hydroxystearic acid 78.0-91.0 %, which is ricinoleic acid with its double bond hydrogenated and so is not filed under ricinoleic (C18:1-OH); 12-oxostearic acid max. 5.0 %; any other fatty acid. The mapped keys therefore cover only 13.5 % of the fatty acids (representative values), and soap-quality figures computed from them describe that minor fraction, not the wax. With 12-hydroxystearic acid at its midpoint (84.5 %, M 300.48) and 12-oxostearic acid at its maximum (5.0 %, M 298.46) added, the composition implies about 180.6 mg KOH/g, inside the published 176-182; the mapped keys alone imply 190.1. The Ph. Eur. prints no saponification value. sapKohMgPerG is from the USP 35-NF 30 NF monograph 'Hydrogenated Castor Oil' (refined, bleached, hydrogenated and deodorized Castor Oil, consisting mainly of the triglyceride of hydroxystearic acid): saponification value between 176 and 182; the same monograph gives melting range (Class II <741>) between 85 and 88 C, iodine value not more than 5, hydroxyl value between 154 and 162 and free fatty acids not more than 11.0 mL of 0.1 N sodium hydroxide for 20 g, and no fatty-acid composition. USP 38-NF 33 prints the same values. Producers: Koster Keunen Castor Wax (INCI Hydrogenated Castor Oil, CAS 8001-78-3, EINECS 232-292-2): melting point (USP 741) 85-89 C, acid value 3 maximum, saponification value 174 minimum, iodine value 3 maximum. ITOH Oil Chemicals castor-oil-derivatives catalogue (Japanese), hydrogenated castor oil: melting point 80-90 C, acid value <=3, saponification value 175-185, iodine value <=5, hydroxyl value 150-165; grade A: melting point 84-87 C, acid value <=2, saponification value 175-185, iodine value <=3, hydroxyl value 155-165 (rows paired from pdftotext -raw; -layout offsets the product names by one row). Degree of hydrogenation: fully hydrogenated (iodine value max. 5.0). unsaponifiablePercent is null: neither pharmacopoeia nor either producer prints an unsaponifiable limit. meltingPointC is the Ph. Eur. 2.2.14 (capillary) melting point; the USP <741> Class II range is 85-88 C. CosIng lists no saponified name for hydrogenated castor oil.
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