Rice Bran Oil
INCI Oryza Sativa Bran Oil. Saponified with NaOH it is listed as Sodium Ricebranate, with KOH as Potassium Ricebranate. CAS 68553-81-1, 84696-37-7; EC 271-397-8, as CosIng gives them. Also: Rice oil, Oryza sativa bran oil.
Published values
| Saponification value | 180–199 mg KOH/g |
| Used by the calculator | 189.5 mg KOH/g (midpoint) |
| SAP for NaOH | 0.1351 g/g |
| Iodine value | 90–115 g I₂/100 g |
| INS (SAP − IV) | 87 |
| Melting point | — |
| Unsaponifiable matter | ≤ 6.5 % |
Soapmaking books print about 0.129 g NaOH per g (median of 6 books). Books print 0.128-0.133 g NaOH per g for rice bran oil. The Codex standard gives 180-199 mg KOH/g and India's standard for refined oil 180-195; the books sit at the bottom, where crude oil heavy in wax and oryzanol lands, so we use 189.5 (0.135).
A bar made of 100 % Rice Bran Oil
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 | 64.2 g(61.0–67.4) | 90.0 g(85.5–94.5) |
| 1 kg | 128.3 g(121.9–134.8) | 180.0 g(171.0–189.1) |
| 1 lb (454 g) | 58.2 g(55.3–61.1) | 81.7 g(77.6–85.8) |
| 2 lb (907 g) | 116.4 g(110.6–122.3) | 163.3 g(155.1–171.5) |
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 23 : 77
| Fatty acid | Published range, % | Used | |
|---|---|---|---|
| Lauric acid | C12:0 · saturated | 0–0.2 | 0.1 |
| Myristic acid | C14:0 · saturated | 0–1 | 0.5 |
| Palmitic acid | C16:0 · saturated | 14–23 | 18.5 |
| Palmitoleic acid | C16:1 | 0–0.5 | 0.3 |
| Stearic acid | C18:0 · saturated | 0.9–4 | 2.5 |
| Oleic acid | C18:1 | 38–48 | 43.0 |
| Linoleic acid | C18:2 | 21–42 | 31.5 |
| α-Linolenic acid | C18:3 n-3 | 0.1–2.9 | 1.5 |
| Arachidic acid | C20:0 · saturated | 0–0.9 | 0.5 |
| Gadoleic acid | C20:1 | 0–0.8 | 0.4 |
| Behenic acid | C22:0 · saturated | 0–1 | 0.5 |
| Lignoceric acid | C24:0 · saturated | 0–0.9 | 0.5 |
Recipes that use it
- Rice bran and avocado bar 30 % of the oils
- Indigo and annatto funnel pour bar 25 % of the oils
- Nettle and yarrow split bar 25 % of the oils
- Soap scrap confetti bar 23 % of the oils
- Madder root ombre bar 20 % of the oils
- Lemon, annatto and cocoa linear swirl bar 16 % of the oils
- Blue and gold drop swirl bar 15 % of the oils
- Hand-milled glycerin bar 15 % of the oils
- Indigo in-the-pot swirl bar 15 % of the oils
- Natural colour sampler cubes 15 % of the oils
- Dandelion zebra-stripe bar 14 % of the oils
- Green tea and cucumber facial bar 10 % of the oils
Guides that discuss it
- Antioxidants and chelators: keeping soap from going off
- Dreaded orange spots (DOS) and rancid soap
- SAP values: what they measure and why tables disagree
- Soap from used cooking oil: how much lye, and how to clean the oil
- The soaping oils: what each one brings to a bar
Compared with other oils
Where these numbers come from
Verbatim mirror of the FAO file CXS_210e.pdf; the official FAO link was Cloudflare-gated at retrieval. Table 1 (Section 3.1) = mandatory GLC fatty-acid ranges, % of total fatty acids, ND = not detectable (<=0.05%). Table 2 (Appendix 'Other quality and composition factors') gives saponification value, iodine value (Wijs) and unsaponifiable matter of CRUDE oils; the Appendix is explicitly ADVISORY (a product not meeting it may still conform). This print predates the 2021-2025 amendments; the 2024 additions (avocado, camellia seed, sacha inchi, high-oleic soya bean) are not included.
Fatty acids from CXS 210 Table 1 (mandatory GLC ranges, % of total fatty acids; 'ND' = not detectable, <=0.05%, entries that are ND-only are omitted; C17:0, C17:1, C20:2, C22:2 and C24:1 columns omitted because they are outside the acids this database records). The saponification value, the iodine value and the unsaponifiable share from Appendix Table 2 (crude oils; ADVISORY, not mandatory; unsaponifiable converted from g/kg). No 'typical' values are printed in the standard, so none are given. Appendix: gamma-oryzanol in crude rice bran oil 0.9-2.1 %. Unsaponifiable printed '<= 65' g/kg (high because of oryzanol).
This record is part of the open ingredient database (ODbL), which you can download as CSV or JSON. Found an error or a better primary source? Corrections with a link to the document are welcome at support@soapformulator.com.