Stable liquid suspensions and method for analyzing same
    23.
    发明授权
    Stable liquid suspensions and method for analyzing same 失效
    稳定的液体悬浮液及其分析方法

    公开(公告)号:US5922087A

    公开(公告)日:1999-07-13

    申请号:US707876

    申请日:1996-09-09

    CPC分类号: C09B67/0078

    摘要: Stable, pourable aqueous suspensions of solid particulate materials are provided, especially suspensions of sulfur dyes which are characterized a very low content of inorganic sulfides and inorganic polysulfides. The suspensions are produced using certain suspension stabilizing agents, particularly polysaccharides, such as xanthan gum, whose solutions in water are pseudoplastic. The suspensions may further comprise a non-sulfide reducing agent. An improved method is also provided for determining the the potential for such suspensions to release hydrogen sulfide upon being acidified at a given temperature, which method comprises acidifying a sample of the suspension to pH 2.9-3.7, capturing all of the hydrogen sulfide released during acidification in aqueous alkali and measuring the sulfide ion content of the aqueous alkali.

    摘要翻译: 提供固体颗粒材料的稳定的可倾倒的水性悬浮液,特别是硫化染料的悬浮液,其特征在于非常低含量的无机硫化物和无机多硫化物。 悬浮液使用某些悬浮稳定剂,特别是多糖,例如黄原胶,其在水中的溶液是假塑性产生的。 悬浮液还可以包含非硫化物还原剂。 还提供了一种改进的方法,用于确定这样的悬浮液在给定温度下酸化时释放硫化氢的可能性,该方法包括将悬浮液的样品酸化至pH 2.9-3.7,捕获在酸化过程中释放的所有硫化氢 在碱水溶液中,测定碱水溶液的硫化物离子含量。