Dipotassium disulfate(CAS号:7790-62-7)
焦硫酸钾
基本信息

CAS号
7790-62-7
分子式
K2O7S2
分子量
254.32 g/mol
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基本物理性质
熔点
325 ºC
密度
2.28 g/mL at 25 °C(lit.)
溶解度
H2O: 0.1 M at 20 °C, clear, colorless
安全信息
查看安全信息危险说明
H314
危险类别
8
稳定性
Stable. Incompatible with strong acids, strong bases.
敏感性
Hygroscopic
一,将粉状硫酸钾中加入硫酸,在一定的温度下反应完毕后,冷却至50-60℃结块后,敲碎密封保存即可。 二,灼烧硫酸氢钾即可生成焦硫酸钾。在容积为500mL的瓷皿中放入500g硫酸氢钾,送入马弗炉中加热至250℃,经过30min后,将温度升高到320~340℃。硫酸氢钾开始分解起泡,并有水蒸气冒出。当停止冒泡,并有白色的SO3气体产生时,则表明KHSO4的缩聚过程结束。将所得的熔融体转移到瓷研钵中,冷却至50~60℃,趁热将其打成碎块,并迅速移入磨口瓶中用石蜡密封。 三,将硫酸氢钾加热至250℃,保持30min,升温至320~340℃,进行分解。当停止冒气泡并出现三氧化硫蒸气时,再继续加热5~10min,停止灼烧,冷却至50~60℃,敲碎熔体即得焦硫酸钾,密封保存。
同义词与参考文献
英文
- Potassium pyrosulfate
- Disulfuricacid,dipotassiumsalt
- POTASSIUM HYDROGEN SULFATE
- POTASSIUM PYROSULPHATE
- DIPOTASSIUM DISULFATE
- DI-POTASSIUM DISULPHATE
- POTASSIUM DISULFATE R. G.
- dipotassium,sulfonato sulfate
- “Anhydrous” potassiuM acid sulfate
- PotassiuM anhydrosulfate
- Potassium disulfate
- POTASSIUMPYROSULFATE
- AVJ6ZST7L6
- Disulfuric acid dipotassium salt
- dipotassium sulfonato sulfate
- Potassium pyrosulfate, 98%, for analysis
- Dipotassium disulphate
- Dipotassium pyrosulfate
- Disulfuric acid, dipotassium salt
- Potassium sulfate (K2S2O7)
- Kaliumpyrosulfat
- Potassium disulfate (K2S2O7)
- Pyrosulfuric acid, dipotassium salt
- potassium disulphate
- Disulfuric
中文
- 焦硫酸钾
- 硫酸氢钾, ACS
- 无水酸性硫酸钾
- 无水重硫酸钾
- 焦硫酸钾, 分析纯
- 水重硫酸钾
- 焦碲酸钾
- 焦硫酸钾,AR
- 焦硫酸钾,CP
- 焦硫酸钾,GR
- 二硫酸钾
MDL_Number
MFCD00011385
CAS号
7790-62-7
Merck_Index
14,7664
供应商信息
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