CASNo.：77-99-6外观白***状结晶微带色固体微带色固体羟基的质量分数/％≤37.537.537.0水的质量分数/％≥0.050.100.1酸的质量分数（以HCOOH计）/％≤0.0010.0020.002结晶点/°C≤59.058.058.0灰的质量分数/%≥0.0020.0030.005色度/Hazen单位（铂－钴色号）≥153050)