{"id":95,"date":"2021-06-29T13:45:01","date_gmt":"2021-06-29T04:45:01","guid":{"rendered":"https:\/\/www.j-vp.co.jp\/english\/?page_id=95"},"modified":"2024-03-22T08:44:27","modified_gmt":"2024-03-21T23:44:27","slug":"px","status":"publish","type":"page","link":"https:\/\/www.j-vp.co.jp\/english\/s_pva\/px","title":{"rendered":"Sodium-free POVAL"},"content":{"rendered":"\n

Sodium-free POVAL contains a negligible amount of heavy metals. The principal metallic constituent, sodium (Na), is kept under 1 ppm.<\/p>\n\n\n\n

Sodium-free POVAL PX Series<\/h2>\n\n\n\n

The POVAL PX Series is produced using our innovative method resulting in minimal heavy metal presence. In particular sodium (Na) levels are reduced to the lowest possible amount achievable by conventional manufacturing methods. The PX Series is best suited for customers using POVAL for electronic materials.<\/p>\n\n\n\n

Grade and Specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n
Analysis<\/td>\nPXP-05<\/td>\nPXP-18<\/td>\n<\/tr>\n
Volatiles (%)<\/td>\nMax. 6<\/td>\nMax. 6<\/td>\n<\/tr>\n
Degree of hydrolysis (mol%)<\/td>\n86 – 90<\/td>\n86 – 90<\/td>\n<\/tr>\n
4% Viscosity (mPa\uff65s)<\/td>\n4 – 6<\/td>\n23 – 27<\/td>\n<\/tr>\n
4% pH<\/td>\n5 – 7<\/td>\n5 – 7<\/td>\n<\/tr>\n
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Impure substance<\/p>\n<\/td>\n<\/tr>\n

Na<\/td>\n\uff3bppm\uff3d<\/td>\nMax. 1<\/td>\n<\/tr>\n
Fe<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u203bContact us for more information on other impure substances.
\u203bMethod of measuring PVA properties: JIS K-6726 conformity. ICP-MS impure substance amount.<\/p>\n\n\n

Characteristics<\/h2>\n\n\n\n