物理性质及形态:1:工业硅酸钠技术指标类别指标名称技术指标液体二氧化硅（%)≥26.0≥29.2≥25.7氧化钠（%）≥8.2≥12.8≥10.2波美度39.0-41.050.0-52.044.0-46.0水不溶物（%）≤0.10≤0.10≤0.10铁（%）≤0.03≤0.03≤0.03模数3.1-3.42.2-2.52.6-2.9固体可溶固体（%）≥99≥99≥99铁（%）≤0.036≤0.025≤0.021模数3.1-3.42.6-2.92.2-2.5粉状速溶硅酸钠质量指标：规格指标名称IIIIIIIV模数2.00-2.202.30-2.502.80-3.003.10-3.30二氧化硅SiO2%49.0-53.052.0-56.057.0-61.059.0-63.0氧化钠Na2O%24.0-27.022.0-25.020.0-23.018.0-21.0溶解速度秒