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CAS# 13779-41-4. 250g. Difluorophosphoric acid hemihydrate, tech. gr.. MFCD09842893. Molecular Weight: 101.98 (110.99). Molecular Formula: HPO2F2∙0.5H2O. Color/form: yellow fuming liq. Strem# 93-1571. http://www.strem.com/catalog/v/93-1571/
Difluorophosphoric Acid 97%; 250G CAS# 13779-41-4