Cold-process bench

Saponis

Head-to-head

Castor Oil vs Coconut Oil (76 deg)

soft
hard

Substitution factor

NaOH SAP A 0.1280NaOH SAP B 0.1830A / B = 0.1280 / 0.1830

0.6995

Multiply your lye amount by 0.6995 when swapping Castor Oil for Coconut Oil (76 deg).

Inverse 1.4297 when swapping Coconut Oil (76 deg) for Castor Oil.

500 g swap · pure NaOH

500 g Castor Oil
64.00 g NaOH
500 g Coconut Oil (76 deg)
91.50 g NaOH
Lye_A = Lye_B × factor
91.50 × 0.6995 = 64.00
Reverse pair

Constants

SAP, iodine, INS

MetricCastor OilCoconut Oil (76 deg)Δ A−B
NaOH SAP (pure)

0.1280

0.1830

-0.0550
KOH SAP (pure)

0.1800

0.2570

-0.0770
KOH SAP (90%)

0.2000

0.2856

-0.0856
Iodine value

86

10

+76
INS

95

258

-163
Max % of oils

10%

30%

-20
Hardness class

soft

hard

—
Trace

accelerates

accelerates

—
INCI (pre-sap)

Ricinus Communis (Castor) Seed Oil

Cocos Nucifera (Coconut) Oil

—
INCI NaOH salt

Sodium Ricinoleate

Sodium Cocoate

—
INCI KOH salt

Potassium Ricinoleate

Potassium Cocoate

—

Fatty acids

Eight-acid profile

MetricCastor OilCoconut Oil (76 deg)Δ A−B
Lauric C12:0

0.0%

48.0%

-48.0
Myristic C14:0

0.0%

19.0%

-19.0
Palmitic C16:0

1.0%

9.0%

-8.0
Stearic C18:0

1.0%

3.0%

-2.0
Ricinoleic C18:1-OH

90.0%

0.0%

+90.0
Oleic C18:1

4.0%

8.0%

-4.0
Linoleic C18:2

4.0%

2.0%

+2.0
Linolenic C18:3

0.0%

0.0%

0.0

Quality

Physical contribution

MetricCastor OilCoconut Oil (76 deg)Δ A−B
Hardness

2.0

79.0

-77.0
Cleansing

0.0

67.0

-67.0
Conditioning

98.0

10.0

+88.0
Bubbly lather

90.0

67.0

+23.0
Creamy lather

92.0

12.0

+80.0
Longevity

2.0

12.0

-10.0