规格:分析纯化学纯食品级
分子式:CaCO3
性状:白色粉末或无色结晶，相对密度2.930，825℃分解为氧化钙和二氧化碳，不溶于水，溶于酸。
|
指标名称 |
规格 |
|
|
分析纯AR |
化学纯CP |
|
|
含量 |
≥99% |
≥98% |
|
澄清度试验 |
合格 |
合格 |
|
盐酸不溶物 |
≤0.01% |
≤0.03% |
|
碱度 |
0.25mmol/100g |
0.25mmol/100g |
|
氯化物 |
≤0.002% |
≤0.01% |
|
硫酸盐 |
≤0.01% |
≤0.05% |
|
钠 |
≤0.1% |
≤0.3% |
|
钾 |
≤0.005% |
≤0.05% |
|
镁 |
≤0.05% |
≤0.2% |
|
锶 |
≤0.05% |
≤0.1% |
|
钡 |
≤0.02% |
≤0.04% |
|
铁 |
≤0.001% |
≤0.005% |
|
重金属
|
≤0.001% |
≤0.005% |
