Assertion: copper sulfate's use | /r/HasProperty | recommended for polyester
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Source sentences:
text: For these conjugation experiments, copper(II) sulfate and sodium ascorbate were used in a mixture of water and acetone at 80 °C; however, the use of milder, nonaqueous reaction conditions, for example, copper(I) iodine in catalytic amount with triethylamine in THF at 35 °C, might be recommended for polyesters, especially if the less stable poly(lactide) (PLA) is involved.227