Cold-process bench

Saponis

Head-to-head

Palm Oil (RSPO) vs Castor Oil

hard
soft

Substitution factor

NaOH SAP A 0.1420NaOH SAP B 0.1280A / B = 0.1420 / 0.1280

1.1094

Multiply your lye amount by 1.1094 when swapping Palm Oil (RSPO) for Castor Oil.

Inverse 0.9014 when swapping Castor Oil for Palm Oil (RSPO).

500 g swap · pure NaOH

500 g Palm Oil (RSPO)
71.00 g NaOH
500 g Castor Oil
64.00 g NaOH
Lye_A = Lye_B × factor
64.00 × 1.1094 = 71.00
Reverse pair

Constants

SAP, iodine, INS

MetricPalm Oil (RSPO)Castor OilΔ A−B
NaOH SAP (pure)

0.1420

0.1280

+0.0140
KOH SAP (pure)

0.1990

0.1800

+0.0190
KOH SAP (90%)

0.2211

0.2000

+0.0211
Iodine value

53

86

-33
INS

145

95

+50
Max % of oils

50%

10%

+40
Hardness class

hard

soft

—
Trace

neutral

accelerates

—
INCI (pre-sap)

Elaeis Guineensis (Palm) Oil

Ricinus Communis (Castor) Seed Oil

—
INCI NaOH salt

Sodium Palmate

Sodium Ricinoleate

—
INCI KOH salt

Potassium Palmate

Potassium Ricinoleate

—

Fatty acids

Eight-acid profile

MetricPalm Oil (RSPO)Castor OilΔ A−B
Lauric C12:0

0.0%

0.0%

0.0
Myristic C14:0

1.0%

0.0%

+1.0
Palmitic C16:0

44.0%

1.0%

+43.0
Stearic C18:0

5.0%

1.0%

+4.0
Ricinoleic C18:1-OH

0.0%

90.0%

-90.0
Oleic C18:1

39.0%

4.0%

+35.0
Linoleic C18:2

10.0%

4.0%

+6.0
Linolenic C18:3

0.0%

0.0%

0.0

Quality

Physical contribution

MetricPalm Oil (RSPO)Castor OilΔ A−B
Hardness

50.0

2.0

+48.0
Cleansing

1.0

0.0

+1.0
Conditioning

49.0

98.0

-49.0
Bubbly lather

1.0

90.0

-89.0
Creamy lather

49.0

92.0

-43.0
Longevity

49.0

2.0

+47.0