手工皂制作原料 硬脂酸 stearic acid

硬脂酸 stearic acid ( 十八酸, 己基癸醇硬脂酸酯)
很少单独存在于自然界里，并非化学合成物，常以甘油酯的形态存在，硬脂酸在自然界的分布很广，存在于许多植物性油脂和动物性油脂中。

---

动物脂肪中的含量比在植物油脂中的含量要高，如牛油中的含量可达24%，茶油为0.8%，棕榈油为6%，但可可脂中的含量高达34%。

---

硬脂酸实际上是45%硬脂酸和55%软脂酸的混合物，并含有少量油酸，略带脂肪气味。

---

生产方式
动物油与水在高温高压下反应，使甘油三酸酯水解。不饱和植物油与氢气加成得到。

---

硬脂酸在手工皂的应用主要是增加皂成品硬度。

---

添加硬脂酸的手工皂成品，有刺激皮肤的可能性，也比较容易阻塞毛孔。

---

硬脂酸添加比例为3%~5%。

---

建议计算氢氧化钠时，计入硬脂酸皂化价

---

添加硬脂酸方式，纯硬脂酸融点69.4度，可先与耐热油脂热融，如椰子油棕榈油，一起加热融好，再跟其他油ㄧ起融硷。

---

根据皂友心得:如没併入一起计算ins值，可将计算后约INS90的手工皂配上3%硬脂酸，就可有理想的硬度。

---

询问商家的硬脂酸是那一种等级，应该是要买化妆品级的硬脂酸，购买三压等级。
硬脂酸在手工皂的功能是增加皂的硬度。
操作方式 : 可先与耐热的油一起热融后再与其他的油一起融硷，如融硷后才加入，会加快Trace，需小心有假Trace情况发生。

---

硬脂酸（三压级）
STEARIC ACID

Specs No.:703-28602 Product Code:SA1801 Product Form:Beads

Property:
Acid Value 酸值201-213
Sapon Value 皂化值202-214
Iodine Value 碘值1.0max.
Titer(℃) 熔点54-56
Colour(5 1/4"Lovibond) 颜色Yellow 2.0max. Red 0.5max.
Composition(in%) Approx:
C12(Lauric)& Lower1max.
C14(Myristic)2max.
C16(Palmitic)68max.
C18(Stearic)30min.
C20(Arachidic)1max.
C18'(Oleic)1max.
Standard Packing: -- 25kgs net. in PP Woven with PE inner bag --600kgs net. in jumbo bag
Test Method:AOCS

硬脂酸（二压级）
STEARIC ACID
Specs No.:703-28603 Product Code:SA1806 Product Form:Beads

Property:
Acid Value 酸值207-214
Sapon Value 皂化值208-215
Iodine Value 碘值3.0max.
Titer(℃) 熔点53min.
Colour(5 1/4"Lovibond) 颜色Yellow 5.0max. Red 1.5max.
Composition(in%) Approx:
C12(Lauric)& Lower1max.
C14(Myristic)2max.
C16(Palmitic)70max.
C18(Stearic)29min.
C20(Arachidic)1max.
C18'(Oleic)3max.
Standard Packing: -- 25kgs net. in PP Woven with PE inner bag -- 600kgs net. in jumbo bag
Test Method:AOCS

硬脂酸（一压级）
STEARIC ACID
Specs No.:703-28604 Product Code:SA1810 Product Form:Beads

Property:
Acid Value 酸值185min.
Sapon Value 皂化值186min.
Iodine Value 碘值10max.
Titer(℃) 熔点50min.
Colour(Gardner) 颜色7Gardner max.
Composition(in%) Approx:
C12(Lauric)& LowerVariable
C14(Myristic)Variable
C16(Palmitic)Variable
C18(Stearic)Variable
C20(Arachidic)Variable
C18'(Oleic)Variable
Standard Packing: -- 25kgs net. in PP Woven with PE inner bag -- 600kgs net. in jumbo bag
Test Method:AOCS

硬脂酸（分馏三压级）
STEARIC ACID
Specs No.:703-28605 Product Code:SA1840 Product Form:Beads

Property:
Acid Value 酸值200-212
Sapon Value 皂化值201-213
Iodine Value 碘值1.0max.
Titer(℃) 熔点55-57
Colour(5 1/4"Lovibond) 颜色Yellow 2.0max. Red 0.5max.
Composition(in%) Approx:
C12(Lauric)& Lower1max.
C14(Myristic)2max.
C16(Palmitic)60max.
C18(Stearic)40min.
C20(Arachidic)1max.
C18'(Oleic)1max.
Standard Packing: --25kgs net. in PP Woven with PE inner bag --600kgs net. in jumbo bag
Test Method:AOCS

硬脂酸（分馏三压级）
STEARIC ACID
Specs No.:703-28606 Product Code:SA1850 Product Form:Beads

Property:
Acid Value 酸值198-210
Sapon Value 皂化值199-211
Iodine Value 碘值1.0max.
Titer(℃) 熔点55-58
Colour(5 1/4"Lovibond) 颜色Yellow 2.0max. Red 0.5max.
Composition(in%) Approx:
C12(Lauric)& Lower1max.
C14(Myristic)2max.
C16(Palmitic)53max.
C18(Stearic)47min.
C20(Arachidic)1max.
C18'(Oleic)1max.
Standard Packing: --25kgs net. in PP Woven with PE inner bag --600kgs net. in jumbo bag
Test Method:AOCS

硬脂酸（分馏三压级）
STEARIC ACID
Specs No.:501-38608 Product Code:SAF1865 Product Form:Beads

Property:
Acid Value 酸值200-208
Sapon Value 皂化值201-209
Iodine Value 碘值1.0max.
Titer(℃) 熔点57-61
Colour(5 1/4"Lovibond) 颜色Yellow 3.0max. Red 0.5max.
Composition(in%) Approx:
C14(Myristic)0-1
C16(Palmitic)30-38
C18(Stearic)62-70
C18'(Oleic)0-1
Standard Packing: --20kgs net.in multiply kraft paper bags --25kgs net. in PP Woven with PE inner bag --600kgs net. in jumbo bag
Test Method:AOCS

---

,