Chemical Name: Lanthanum(3+) stearate
CAS No.: 14741-67-4
Molecular Fomula: C54H105LaO6
Molecular weight: 989.3134
Appearance: White powder
Lanthanum Stearate (CAS 14741-67-4) is a rare-earth metal carboxylate with the chemical formula La(C18H35O2)3. Widely used as a thermal stabilizer and lubricant additive.
Parameter | Value |
---|---|
Appearance | White fine powder |
Melting Point | 110-125°C (decomposes) |
La Content | 8.5-9.5% |
Acid Value | <180 mg KOH/g |
Industry | Function | Performance Benefit |
---|---|---|
PVC Manufacturing | Primary stabilizer | Prevents early coloration at 200°C+ |
Lubricant Production | Friction modifier | Reduces COF by 40-60% |
Parameter | La Stearate | Ca Stearate | Zn Stearate |
---|---|---|---|
Thermal Stability | ★★★★☆ | ★★★☆☆ | ★★☆☆☆ |
Lubricity | ★★★★★ | ★★★☆☆ | ★★☆☆☆ |
Dosage: 1.2-1.8 phr
Result: Extended processing window by 15-20 minutes at 210°C
Application: 0.5% in POM
Outcome: Reduced die buildup by 70%
Challenge: Yellowing in rigid PVC profiles
Solution: 1.5% La Stearate additive
Outcome: 300hr UV resistance improvement
Issue: Excessive torque in ABS extrusion
Resolution: 0.8% La Stearate masterbatch
Result: 22% energy cost reduction
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