Lithium Chromate Hydrate 铬酸锂二水合物

CAS 7789-01-7 MFCD07789017

化学结构图

7789-01-7
SMILES: O=[Cr](=O)([O-])[O-].[Li+].[Li+]

化学属性

Mol. Weight179.79
Density1.355
Solubility94.6 G/L (25 ºC)
Mol. FormulaCrH4Li4O6

别名和识别编码

CAS Number7789-01-7
Synonym Lithium chromate dihydrate {LY} Lithium chromate dihydrate {} {LY} Lithium chromate dihydrate {} {} {LY} Lithium chromate dihydrate {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Lithium chromate dihydrate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {
Chemical NameLithium Chromate Hydrate
Chemical Name Translation铬酸锂二水合物
InChIKeyZVWLTFSQNFMYHY-UHFFFAOYSA-N
PubChem Substance ID20230904
InChIInChI=1S/Cr.2Li.2H2O.4O/h;;;2*1H2;;;;/q;2*+1;;;;;2*-1
MDL NumberMFCD00151349
Canonical SMILES[Li].O=[Cr](=O)(O)O.O
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产品应用

  • 金属腐蚀抑制剂，磨光剂、染料颜料催化剂及化学试剂。用于溴化锂空调做缓蚀剂。

安全信息

Hazard Codes O;T+ O,T+
Safety Statements
  • S17 Keep away from combustible material 远离可燃物料；
  • S53 Avoid exposure - obtain special instructions before use 避免接触，使用前获得特别指示说明；
  • S45 In case of accident or if you feel unwell seek medical advice immediately (show the label where possible) 发生事故时或感觉不适时，立即求医（可能时出示标签）；
  • S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护；
Risk Statements
  • R46 May cause inheritable genetic damage 可能引起遗传基因损害
  • R8 Contact with combustible material may cause fire 遇到易燃物会导致起火
  • R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
  • R45 May cause cancer 可能致癌
WGK Germany3
UN Number UN 1479 5.1/PG 3
Storage condition Store at room temperature, keep dry and cool {LY} Store at room temperature, keep dry and cool {} {LY} Store at room temperature, keep dry and cool {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store

其他信息

  • 加热分解，有氧化性，密封保存，溶于水，甲醇，微容于乙醇、丙酮，比重2.149 (25℃)。有毒，25℃时的水溶解度为94.6g/L。
  • 用途:纺织工业中用作冷冻剂
  • MOL 文件:7789-01-7.mol
  • 溴化锂制冷系统中溴化锂溶液的配制:从市场购入的溴化锂有浓度为50%左右的溶液或溴化锂的固体。如溴化锂溶液呈无色状，需要添加重量百分比为0.3%左右的铬酸锂缓蚀剂。添加前应先将铬酸锂溶解在蒸馏水中，然后再加入溴化锂溶液中。添加铬酸锂后的溴化锂溶液，pH值为9.5～10.5时，对金属材料耐腐蚀性能较好。 溴化锂溶液pH值的测定采用pH计或pH试纸，即将溶液搅拌均匀后，用吸液管吸出2mL并用5～10倍的蒸馏水稀释，即可测定。如pH值过小呈酸性反应，溶液中可加入适量的氢氧化锂;如pH值过大呈碱性反应，溶液中可加入适量的溴氢酸。 当采用固体的溴化锂配制溶液时，分别称量所需配制的固体溴化锂和蒸馏水，固体溴化锂逐步加入蒸馏水中并进行搅拌。铬酸锂缓蚀剂的加入和pH值的调整与上述相同。 在制冷系统中，为提高溴化锂机组的制冷能力，必须使冷凝器管外冷剂蒸汽的膜状凝结变为珠状凝结，增加冷凝器和吸收器的传热和传质效果，因此在溴化锂溶液中按重量比例加入0.1%～0.3%的正辛醇或异辛醇。
  • 概述:分子式Li2CrO4，分子量129.87，铬酸锂二水合物为黄色易潮解结晶性粉末。74.6℃时失去水为无水物。极易溶于水。在甲醇和乙醇中可制得无水盐。密封保存。用作试剂，水冷型原子能反应堆作缓蚀剂，溶液用作低温传热介质。

系列性分类

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