Recipe lab

Saponis

Head-to-head

Palm Oil (RSPO) vs Neem Oil

hard
soft

Substitution factor

NaOH SAP A 0.1420NaOH SAP B 0.1387A / B = 0.1420 / 0.1387

1.0238

Multiply your lye amount by 1.0238 when swapping Palm Oil (RSPO) for Neem Oil.

Inverse 0.9768 when swapping Neem Oil for Palm Oil (RSPO).

500 g swap · pure NaOH

500 g Palm Oil (RSPO)
71.00 g NaOH
500 g Neem Oil
69.35 g NaOH
Lye_A = Lye_B × factor
69.35 × 1.0238 = 71.00
Reverse pair

Constants

SAP, iodine, INS

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

0.1420

0.1387

+0.0033
KOH SAP (pure)

0.1990

0.1945

+0.0045
KOH SAP (90%)

0.2211

0.2161

+0.0050
Iodine value

53

72

-19
INS

145

123

+22
Max % of oils

50%

10%

+40
Hardness class

hard

soft

—
Trace

neutral

accelerates

—
INCI (pre-sap)

Elaeis Guineensis (Palm) Oil

Azadirachta Indica (Neem) Seed Oil

—
INCI NaOH salt

Sodium Palmate

Sodium Neemate

—
INCI KOH salt

Potassium Palmate

Potassium Neemate

—

Fatty acids

Eight-acid profile

MetricPalm Oil (RSPO)Neem 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%

18.0%

+26.0
Stearic C18:0

5.0%

18.0%

-13.0
Ricinoleic C18:1-OH

0.0%

0.0%

0.0
Oleic C18:1

39.0%

52.0%

-13.0
Linoleic C18:2

10.0%

9.0%

+1.0
Linolenic C18:3

0.0%

0.0%

0.0

Quality

Physical contribution

MetricPalm Oil (RSPO)Neem OilΔ A−B
Hardness

50.0

36.0

+14.0
Cleansing

1.0

0.0

+1.0
Conditioning

49.0

61.0

-12.0
Bubbly lather

1.0

0.0

+1.0
Creamy lather

49.0

36.0

+13.0
Longevity

49.0

36.0

+13.0