12251-44-4

Basic information

• Product Name: orthoclase
• Synonyms: orthoclase;SANIDINE;POTASSIUMALUMINIUMSILICATE;Orthoclase (K(alsi3o8));Potassium aluminum silicate
• CAS NO: 12251-44-4
• Molecular Formula: AlO8 Si3 . K
• Molecular Weight: 0
• Mol File: 12251-44-4.mol
• Article Data: 0

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• CAS DataBase Reference: orthoclase(CAS DataBase Reference)
• NIST Chemistry Reference: orthoclase(12251-44-4)
• EPA Substance Registry System: orthoclase(12251-44-4)

Safety Data

• Hazardous Substances Data: 12251-44-4(Hazardous Substances Data)

Usage

InChI:InChI=1/Al.K.8O.3Si/q+3;+1;8*-2;3*+4

Related news

Resolving orthoclase (cas 12251-44-4) dissolution processes with atomic force microscopy and X-ray reflectivity08/17/2019

Direct measuremens of orthoclase (001) were performed using in situ atomic force microscopy (AFM) and synchrotron X-ray reflectivity to reveal the Å-scale dissolution process as a function of pH and temperature. Distinct processes were observed, involving mainly terrace roughening at pH = 1.1 an...detailed

Molecular dynamics simulations of the orthoclase (cas 12251-44-4) (0 0 1)- and (0 1 0)-water interfaces08/16/2019

Molecular dynamics simulations of water in contact with the (0 0 1) and (0 1 0) surfaces of orthoclase (KAlSi3O8) were carried out to investigate the structure and dynamics of the feldspar–water interface, contrast the intrinsic structural properties of the two surfaces, and provide a basis for...detailed

Optically stimulated phosphorescence in orthoclase (cas 12251-44-4) feldspar over the millisecond to second time scale08/15/2019

In the past, time-resolved IR stimulated luminescence (TR-IRSL) curves from feldspar have mainly been measured over a few hundred μs with the purpose of estimating the lifetimes of the components. In this study, we present the decay form of time-resolved IRSL and IR stimulated phosphorescence (...detailed

Adsorption of Rb+ and Sr2+ at the orthoclase (cas 12251-44-4) (0 0 1)–solution interface08/14/2019

Adsorption of Rb+ and Sr2+ at the orthoclase (0 0 1)–solution interface is probed with high-resolution X-ray reflectivity and resonant anomalous X-ray reflectivity. Specular X-ray reflectivity data for orthoclase in contact with 0.01 m RbCl solution at pH 5.5 reveal a systematic increase in ele...detailed

On the variation of dissolution rates at the orthoclase (cas 12251-44-4) (0 0 1) surface with pH and temperature08/13/2019

The pH- and temperature-dependent variations of the dissolution rates of orthoclase (0 0 1) surfaces in acidic aqueous solutions were examined in situ by using X-ray reflectivity and compared to density functional theory results. A phenomenological analysis of these data using the conventional r...detailed

Quantifying orthoclase (cas 12251-44-4) and albite muscovitisation sequences in fault zones08/12/2019

A new graphical method is described for assessing the degrees of alteration of orthoclase and albite feldspars to muscovite. The method uses major element data from whole rock samples, and given a range of samples of varying degrees of alteration, pathways of the alteration sequences may be dete...detailed

Chemical bonding and electronic structures of microcline, orthoclase (cas 12251-44-4) and the plagioclase series by X-ray photoelectron spectroscopy08/11/2019

A detailed analysis was undertaken of the X-ray photoelectron spectra obtained from microcline, orthoclase and several samples of plagioclase with varying Na/Ca ratio. Comparison of the spectra was made based on the chemical bonding and structural differences in the Al- and Si-coordination withi...detailed

Macroscopic and spectroscopic characterization of uranium(VI) sorption onto orthoclase (cas 12251-44-4) and muscovite and the influence of competing Ca2+08/10/2019

The uranium(VI) sorption onto orthoclase and muscovite, representing the mineral groups of feldspars and micas as important components of the earth crust, was investigated in the presence and absence of Ca2+ under aerobic conditions. Batch experiments were accompanied by time-resolved laser-indu...detailed

Influence of orthoclase (cas 12251-44-4) phenocrysts on point load strength of granitic rocks08/09/2019

The point load index test involves loading cylindrical, block or irregular rock samples between two conical platens until sample failure. The point load strength index (Is) determined using failure load and sample dimension is widely and variously used in engineering geological studies. Therefor...detailed

Influence of etch pit development on the surface area and dissolution kinetics of the orthoclase (cas 12251-44-4) (001) surface08/08/2019

The (001) orthoclase surface was dissolved at 180 °C and at far from equilibrium conditions with an alkaline solution (pH180 °C = 9) in a titanium open flow reactor. Vertical scanning interferometer (VSI) and atomic force microscope (AFM) surface monitoring were periodically used during the re...detailed