{'fraction_non_alphanumeric': 0.03723404255319149, 'fraction_numerical': 0.0274822695035461, 'mean_word_length': 4.561576354679803, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Possible Anomaly in the Surface Tension of Supercooled Water: New Experiments at Extreme Supercooling down to -31.4 °C.

Surface tension of water is suspected to show a substantial increase at low temperatures, which is considered as one of the many anomalies of water. The second inflection point (SIP) anomaly, originally claimed at around -8 °C, was experimentally refuted down to -25 °C by Hrubý et al. (J. Phys. Chem. Lett. 2014, 5, 425-428 ). Recent molecular simulations predict the SIP anomaly near or even below the homogeneous freezing limit of around -38 °C. In order to contribute to an ongoing discussion about the SIP anomaly new experiments focused on extreme levels of supercooling were carried out in this study. Unique experimental data down to -31.4 °C were collected using two measuring techniques based on the capillary rise method. A significant deviation from the extrapolated IAPWS formulation R1-76(2014) for surface tension of ordinary water was detected below -20 °C. Contrary to previous data, new experiments provide room for an anomaly in the course of surface tension in deeply supercooled region.