Recipe lab

Saponis

Head-to-head

Rice Bran Oil vs Castor Oil

soft
soft

Substitution factor

NaOH SAP A 0.1340NaOH SAP B 0.1280A / B = 0.1340 / 0.1280

1.0469

Multiply your lye amount by 1.0469 when swapping Rice Bran Oil for Castor Oil.

Inverse 0.9552 when swapping Castor Oil for Rice Bran Oil.

500 g swap · pure NaOH

500 g Rice Bran Oil
67.00 g NaOH
500 g Castor Oil
64.00 g NaOH
Lye_A = Lye_B × factor
64.00 × 1.0469 = 67.00
Reverse pair

Constants

SAP, iodine, INS

MetricRice Bran OilCastor OilΔ A−B
NaOH SAP (pure)

0.1340

0.1280

+0.0060
KOH SAP (pure)

0.1870

0.1800

+0.0070
KOH SAP (90%)

0.2078

0.2000

+0.0078
Iodine value

100

86

+14
INS

87

95

-8
Max % of oils

20%

10%

+10
Hardness class

soft

soft

—
Trace

slows

accelerates

—
INCI (pre-sap)

Oryza Sativa (Rice) Bran Oil

Ricinus Communis (Castor) Seed Oil

—
INCI NaOH salt

Sodium Rice Branate

Sodium Ricinoleate

—
INCI KOH salt

Potassium Rice Branate

Potassium Ricinoleate

—

Fatty acids

Eight-acid profile

MetricRice Bran OilCastor OilΔ A−B
Lauric C12:0

0.0%

0.0%

0.0
Myristic C14:0

1.0%

0.0%

+1.0
Palmitic C16:0

21.0%

1.0%

+20.0
Stearic C18:0

2.0%

1.0%

+1.0
Ricinoleic C18:1-OH

0.0%

90.0%

-90.0
Oleic C18:1

42.0%

4.0%

+38.0
Linoleic C18:2

31.0%

4.0%

+27.0
Linolenic C18:3

1.0%

0.0%

+1.0

Quality

Physical contribution

MetricRice Bran OilCastor OilΔ A−B
Hardness

24.0

2.0

+22.0
Cleansing

1.0

0.0

+1.0
Conditioning

74.0

98.0

-24.0
Bubbly lather

1.0

90.0

-89.0
Creamy lather

23.0

92.0

-69.0
Longevity

23.0

2.0

+21.0