Recipe lab

Saponis

Head-to-head

Hemp Seed Oil vs Castor Oil

soft
soft

Substitution factor

NaOH SAP A 0.1370NaOH SAP B 0.1280A / B = 0.1370 / 0.1280

1.0703

Multiply your lye amount by 1.0703 when swapping Hemp Seed Oil for Castor Oil.

Inverse 0.9343 when swapping Castor Oil for Hemp Seed Oil.

500 g swap · pure NaOH

500 g Hemp Seed Oil
68.50 g NaOH
500 g Castor Oil
64.00 g NaOH
Lye_A = Lye_B × factor
64.00 × 1.0703 = 68.50
Reverse pair

Constants

SAP, iodine, INS

MetricHemp Seed OilCastor OilΔ A−B
NaOH SAP (pure)

0.1370

0.1280

+0.0090
KOH SAP (pure)

0.1930

0.1800

+0.0130
KOH SAP (90%)

0.2144

0.2000

+0.0144
Iodine value

165

86

+79
INS

39

95

-56
Max % of oils

10%

10%

0
Hardness class

soft

soft

—
Trace

accelerates

accelerates

—
INCI (pre-sap)

Cannabis Sativa (Hemp) Seed Oil

Ricinus Communis (Castor) Seed Oil

—
INCI NaOH salt

Sodium Hempseedate

Sodium Ricinoleate

—
INCI KOH salt

Potassium Hempseedate

Potassium Ricinoleate

—

Fatty acids

Eight-acid profile

MetricHemp Seed OilCastor OilΔ A−B
Lauric C12:0

0.0%

0.0%

0.0
Myristic C14:0

0.0%

0.0%

0.0
Palmitic C16:0

6.0%

1.0%

+5.0
Stearic C18:0

2.0%

1.0%

+1.0
Ricinoleic C18:1-OH

0.0%

90.0%

-90.0
Oleic C18:1

12.0%

4.0%

+8.0
Linoleic C18:2

56.0%

4.0%

+52.0
Linolenic C18:3

21.0%

0.0%

+21.0

Quality

Physical contribution

MetricHemp Seed OilCastor OilΔ A−B
Hardness

8.0

2.0

+6.0
Cleansing

0.0

0.0

0.0
Conditioning

89.0

98.0

-9.0
Bubbly lather

0.0

90.0

-90.0
Creamy lather

8.0

92.0

-84.0
Longevity

8.0

2.0

+6.0