Do not trust single-value MSDS entries for "cardanol boiling point." Always request the distillation curve from your supplier, including pressure conditions and congener analysis (GC-FID or HPLC).

Each of these congeners has a slightly different molecular weight and intermolecular force, leading to different boiling points. When heated, the lighter components vaporize first, and the temperature steadily rises as the heavier ones follow. Hence, one observes a .

In confined spaces (e.g., a distillation flask), runaway exothermic polymerization can lead to pressure bursts. Therefore, heating cardanol to its atmospheric boiling point is explicitly discouraged by safety data sheets from major suppliers (e.g., Cardolite Corp, Palmer International).

For further reading, refer to:

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