Hydroxylapatite
Molecular Structure:
MDL:
--MFCD00010904
Molecular Formula:
HCa5O13P3;3Ca3(PO4)2·Ca(OH)2
Molecular Weight:
502.31
Alias:
羟磷灰石,骨粉
Calcium hydroxyphosphate
Calcium phosphate tribasic
HAp
Hydroxylapatite
Durapatite
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
Hydroxylapatite |
BC |
500g |
RMB 1518 |
Consulting service |
Hydroxylapatite |
BC |
100g |
RMB 369.6 |
促销 |
Hydroxylapatite |
BC |
25g |
RMB 206.8 |
现货 |
Character:
几乎不溶于水.
羟基磷灰石的组成和晶体结构羟基磷灰石的理论组成为 Ca10(PO4)6(OH)2,Ca/P 为1.67,但由于受到制备过程的影响,其真正的组成是相当复杂的。 HA 晶体为六方晶系,属L6PC 对称型和P63/m空间群,其结构为六角柱体,与c 轴垂直的面是一个六边形,a、b 轴夹角120º;,其晶胞参数为a=9.43~9.38Å;,c=6.88~6.86Å;,z=2,单位晶胞含有10 个Ca2+、6 个PO43-和2 个OH-。HA 微晶表面具有几种可能的表面状态:(1)当OH 位于晶体表面时,OH 与2个Ca(Ⅱ)离子相连,当HA 在水溶液中时,这个表面OH 位置至少在某一瞬间空缺,由于2 个Ca(Ⅱ)离子带正电荷,形成了一个吸附位置,这个位置能吸附PO43-或大分子上的磷酸根基团或羧基基团。(2)当Ca 离子位于晶体的表面时,由于Ca(Ⅰ)与6 个带负电电荷的O 原子相连,当HA 在水溶液中,表面的Ca(Ⅰ)位置在某一瞬间空缺时,就在Ca(Ⅰ)位置形成较强的吸附位置,能吸附Sr3+、K+等阳离子及蛋白质分子的基团,而在 Ca(Ⅱ)位置则形成一个较弱的吸附位置。(3)PO43-位于晶体的表面时,H2O 通过氢键与PO43-离子结合。
Quality Standard:
平均粒径Every particle size ≤40nm
元素含量Assay( Ca10(PO4)6(OH)2) ≥96%
重金属Heavy metals (as Pb) ≤8ppm
砷As ≤1ppm
干燥失重Loss on drying 0.59%
灼烧失重Loss on ignition 2.59%
白度 96
PH值 7.41
盐酸不溶物Insolubles in HCl 0.02%
Storage:
用途 纯化蛋白质,从双链RNA中分离单链RNA,纯化DNA。
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