Neatsfoot Oil
INCI Neatsfoot Oil. CAS 8002-64-0; EC 232-314-0, as CosIng gives them. Also: Neat's-foot oil, Neats-foot oil, Bubulum oil, Hoof oil, Cattle foot oil.
Published values
| Saponification value | 192–198 mg KOH/g |
| Used by the calculator | 195.0 mg KOH/g (midpoint) |
| SAP for NaOH | 0.1390 g/g |
| Iodine value | 67–75 g I₂/100 g |
| INS (SAP − IV) | 124 |
| Melting point | — |
| Unsaponifiable matter | ≤ 1 % |
One soapmaking book prints 0.136 g NaOH per g. Why book figures and ours can differ.
A bar made of 100 % Neatsfoot Oil
The soap qualities are derived from the fatty-acid profile, which is below. They are shown here only for records the calculator can use.
How much lye
| Oil | NaOH | KOH |
|---|---|---|
| 500 g | 66.0 g(65.0–67.0) | 92.6 g(91.2–94.1) |
| 1 kg | 132.1 g(130.0–134.1) | 185.3 g(182.4–188.1) |
| 1 lb (454 g) | 59.9 g(59.0–60.8) | 84.0 g(82.7–85.3) |
| 2 lb (907 g) | 119.8 g(118.0–121.6) | 168.1 g(165.5–170.6) |
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
| Fatty acid | Published range, % | Used | |
|---|---|---|---|
| No fatty-acid profile could be sourced cleanly for this record yet. | |||
Where these numbers come from
Public.Resource.Org scan on the Internet Archive (item gov.in.is.4054.1966). Adopted 24 November 1966. The text layer is OCR and garbles the saponification and titre rows, so Table 1 was read from the page image (rendered with pypdfium2). Every requirement is a range or a maximum; the standard prints no typical values.
Table 1 (cattle column) and the abstract, read from the full-text PDF and rejected; see notes.
The fixed oil of cattle feet. IS 4054 defines it as obtained 'by solvent extraction or by boiling in water the shin bones and feet (deprived of hoofs) of cattle', clear and pale yellow and free from other oils; its foreword calls it 'babulum oil, or hoof oil' and says it is used in the leather industry for fatliquoring, waterproofing and softening. Every figure is from IS 4054:1966 Table 1, read from the page image of the 1999 reprint (incorporating Amendment No. 1): refractive index at 40 C 1.4580-1.4610; specific gravity at 30/30 C 0.906-0.911; iodine value (Wijs) 67 to 75; unsaponifiable matter max 1.0 % by weight; saponification value 192 to 198; titre 20 to 30 C; acid value max 10; and a solidification test (Appendix A: the dried oil, held at 2 C for 24 h, must still flow although cloudy and dull, and must turn clear and bright when warmed to 8-10 C). The foreword says the committee drew on data from the Central Leather Research Institute, Madras, and on the Merck Index (7th ed., 1960). An acid value of up to 10 is up to about 5 % free fatty acids (as oleic), which the saponification value already counts. The titre is the solidification point of the fatty acids split from the oil, not a melting point of the oil, so the melting point is blank. NO FATTY-ACID PROFILE IS RECORDED: {} here means none could be sourced cleanly, not that there is none (the oil is a triglyceride of mainly C16 and C18 acids). The only analysis of cattle neatsfoot oil that could be opened, Krishnaraja, Kulkarni, Visha and Selvaraj, J. Meat Sci. 7(2):52-53 (2011), a research note on oil wet-rendered from the feet of Indian non-descript cattle, gives in Table 1 (%): myristic 0.4, myristoleic 0.2, palmitic 11.9, palmitoleic 2.05, C17:0 0.3, stearic 4.35, oleic 40.95, linoleic 35.5, linolelaidic 0.55, linolenic 0.1, arachidic 0.35, EPA 0.15, DHA 0.35 (total 97.15), while its abstract puts cattle linoleic at 50.30 %. It was read and rejected: 35-50 % linoleic acid is not credible in a ruminant fat, the authors themselves note that earlier work found 2.5-12.6 % (Cattaneo et al. 1959, 12.1 % in cattle knuckle bones; Kulkarni et al. 1986, 2.5 %, and Mittal et al. 1990, 12.64 %, in buffalo hooves; none of the three was opened here), and the table's own acids imply an iodine value of about 100 (AOCS Cd 1c-85 factors), outside the 67-75 of IS 4054. Without a profile the soap-quality numbers are not computed; the saponification value is published, so the calculator can still use the oil. INCI name, CAS and EC numbers are CosIng's entry for Neatsfoot Oil ('a fixed oil obtained from cattle feet'); CosIng also carries Bubulum Oil, 'the fixed oil obtained from the feet of cattle', under the same CAS and EC numbers and with Neatsfoot Oil as its US name. CosIng lists no saponified salt names.
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.