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Silicic acid
产品编号: | 4058965 |
规格: | precipitated extra pure heavy |
CAS NO: | 10279-57-9 |
包装规格: | 1 KG,20 KG |
产品类别: | 进口试剂 |
品牌: | Supelco |
优惠价: | 立即咨询 |
产品价格查看更多规格...
产品编号 | 包装单位 | 单价(元) | 国内现货 | 国外库存 | 询价单 |
4058965 | 1 KG | 3670 | |||
4058965 | 20 KG | 96570 |
产品别名
10279-57-9
Silicic acid
基本信息
Empirical Formula【经验(实验)分子式】 | O2Si · xH2O |
Molecular weight | 60.08 (anhydrous basis) |
EC Index Number【EC索引号】 | 231-545-4 |
Analysis Note【分析说明】 | Identity: passes test Assay (gravimetric, SiO₂, calc. on ignited substance): ≥ 99 % Chloride (Cl): ≤ 0.05 % Heavy metals (as Pb): ≤ 0.005 % Fe (Iron): ≤ 0.03 % With hydrofluoric acid non volatile matter (as sulfate, ignited basis): ≤ 1 % Loss on ignition (1000 °C): 10 - 20 % Particle size (< 0.1 mm): about 99 % Bulk density: 20 - 60 g/100 ml |
产品性质
Quality Level【质量水平】 | 200 |
Assay【测定】 | ≥99% SiO2 basis (calculated on ignited on substance, gravimetric) |
form【形式】 | solid |
potency【效能】 | >10000 mg/kg LD50, oral (Rat) >5000 mg/kg LD50, skin (Rabbit) |
mp | 1710 ℃ |
solubility【溶解性】 | water: insoluble at 20 ℃ |
density | 2-6 g/cm3 at 20 ℃ |
bulk density【堆积密度】 | 60‑600 kg/m3 |
anion traces【痕量阴离子】 | chloride (Cl-): ≤0.05% |
cation traces【痕量阳离子】 | Fe: ≤0.03% heavy metals (as Pb): ≤0.005% |
application(s) | sample preparation |
storage temp.【储存温度】 | 2-30℃ |
安全信息
Storage Class Code【储存分类代码】 | 13 - Non Combustible Solids |
WGK | nwg |