Capric Acid
INCI Capric Acid. CAS 334-48-5; EC 206-376-4, as CosIng gives them. Also: Decanoic acid, C10:0 fatty acid, Capric acid 99%, n-Decylic acid.
Published values
| Saponification value | 322–330 mg KOH/g |
| Used by the calculator | 326.0 mg KOH/g (midpoint) |
| SAP for NaOH | 0.2324 g/g |
| Iodine value | ≤ 0.5 g I₂/100 g |
| INS (SAP − IV) | 326 |
| Melting point | — |
| Unsaponifiable matter | — |
A bar made of 100 % Capric Acid
Conventional qualities summed from the fatty-acid groups; a single-oil bar is a reference point, not a recipe.
How much lye
| Oil | NaOH | KOH |
|---|---|---|
| 500 g | 110.4 g(109.0–111.7) | 154.9 g(153.0–156.8) |
| 1 kg | 220.8 g(218.1–223.5) | 309.7 g(305.9–313.5) |
| 1 lb (454 g) | 100.1 g(98.9–101.4) | 140.5 g(138.8–142.2) |
| 2 lb (907 g) | 200.3 g(197.8–202.7) | 281.0 g(277.5–284.4) |
For this oil alone at 5 % superfat, with pure sodium hydroxide (NaOH) or pure potassium hydroxide (KOH); in brackets, across the published range of its saponification value. KOH is usually sold at 90 %: divide by 0.9. For a whole recipe, open the calculator.
Fatty-acid profile
Saturated : unsaturated 100 : 0
| Fatty acid | Published range, % | Used | |
|---|---|---|---|
| Caproic acid | C6:0 · saturated | ≤ 0.5 | 0.5 |
| Caprylic acid | C8:0 · saturated | ≤ 1 | 1.0 |
| Capric acid | C10:0 · saturated | ≥ 99 | 99.0 |
| Lauric acid | C12:0 · saturated | ≤ 1 | 1.0 |
Where these numbers come from
Specification table on the product page: acid value 321-329, saponification value 322-330 mg KOH/g, iodine value 0.5 max, titre 30-32 C, colour 0.5/5 max (Lov R/Y); composition C6 0.5 max, C8 1 max, C10 99 min, C12 1 max, others 0.5 max; product form liquid.
Brochure PDF (uploaded 2012), fractionated fatty acids table: AV 321-329, SAP 322-330, IV 0.5 max, titre 30-32 C, colour 0.5/5 max, C6 0.5 max, C8 1 max, C10 99 min, C12 1 max. Text extracted with pdftotext -layout; extracted rows are shifted one line against their labels and were checked against the product page.
Producer specification for Wilmar WILFARIN CA-1099 (Capric Acid 99%, from the splitting of palm and palm-kernel oil): acid value 321-329 mg KOH/g, saponification value 322-330 mg KOH/g, iodine value 0.5 max (% I2 absorbed = g/100 g), titre 30-32 C, colour 0.5/5 max (Lovibond R/Y), composition C6 0.5 % max, C8 1 % max, C10 99 % min, C12 1 % max, others 0.5 % max; supplied liquid. Free fatty acid, so one KOH per molecule and not three: 56106 / 172.26 = 325.7 mg KOH/g for the pure acid against a published band of 322-330, agreement to well under a percent. The published value is the one to use for lye calculation. Titre 30-32 C is a solidification point, not a melting point, so the melting point is blank; C10 is solid at room temperature and melts in the hand, which is the practical difference from C8. Wilmar's oleochemical brochure repeats the same limits (additional source); its text-extracted rows sit one line off their labels, so the product page was used to fix the mapping. In soap C10 behaves like a shorter, sharper lauric: it lathers instantly and cleans hard, and past roughly 15-20 % of the fat it strips skin and softens the bar, which is why it normally appears only as the 5-10 % that comes with coconut or palm-kernel oil rather than as a neat addition. INCI name from CosIng; the salt names were not established from an allowed document, so saponifiedInci is blank.
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