Wednesday, December 17, 2014

Overview of Tellurium

A semi-metal usually acquired as a blah powder.
Tellurium is acclimated in alloys, mostly with chestnut and stainless steel, to advance their machinability. If added to advance it makes it added aggressive to acids and improves its backbone and hardness.
Tellurium has been acclimated to vulcanise rubber, to casting bottle and ceramics, in solar cells, in rewritable CDs and DVDs and as a agitator in oil refining. It can be benumbed with silver, gold, chestnut or tin in semiconductor applications.
Biological role
Tellurium has no accepted biological role. It is actual baneful and teratogenic (disturbs the development of an antecedent or foetus). Workers credible to actual baby quantities of tellurium in the air advance ‘tellurium breath’, which has a garlic-like odour.
Natural abundance
Tellurium is present in the Earth’s band abandoned in about 0.001 locations per million. Tellurium minerals cover calaverite, sylvanite and tellurite. It is aswell begin absolute in nature, but abandoned actual rarely. It is acquired commercially from the anode muds produced during the electrolytic adorning of copper. These accommodate up to about 8% tellurium.
from:Tellurium metal

Monday, December 15, 2014

Precious metal adorning process

Precious metals adorning is a address acclimated to absolve Precious metals. There are several altered methods for adorning Precious metals, but the two capital methods are pyrometallurgy, which involves heating, and hydrometallurgy, which involves abandoning the metals into a solvent. After purification, the metals are bankrupt to complete the adorning process.
Preparing for Precious metals adorning generally involves demography a sample of the metal to be aesthetic and creating an assay. During sampling, the metal is weighed, measured, and broiled into a liquid, and again samples are taken. Usually one sample is retained by the adorning accession and accession is accustomed to the customer. After sampling, an appraisal is run to actuate the exact amounts and concentrations of the Precious metals and algae to be removed.
Once the sample and appraisal are performed the Precious metals adorning action can begin, usually through pyrometallurgy or hydrometallurgy. During pyrometallurgy, the metal is acrimonious and broiled to abstracted the assorted impurities. In some metal processing, a anatomy of gas will be acclimated to balloon through the broiled metal, and either the targeted Precious metals or the algae will oxidize, alteration bendability to acquiesce for removal. In some cases, the algae and the Precious metals cook at decidedly altered temperatures, which allows for simple break by concrete means.
from:Rare Metals

Sunday, December 7, 2014

Overview of Galarubicin hydrochloride

Galarubicin hydrochloride has greater efficacy and less toxicity than dox- orubicin.And toxicity of DA-125 in advanced non-small-cell lung cancer (NSCLC).
Name:Galarubicin hydrochloride
Molecular Weight:670.04781
Molecular Formula:C30H33ClFNO13
CAS: 140637-82-7
Activity and Mechanism:
Antibiotics and Alkaloids, Antineoplastic Antibiotics, Chemical Delivery Systems, DRUG DELIVERY, Drug Delivery Systems, Leukemia Therapy, ONCOLYTIC DRUGS, Anthracyclines

Tuesday, December 2, 2014

about N-methyl-4-piperidone

NAME :N-methyl-4-piperidone
CAS NO.: 1445-73-4
SYNONYMS: 1-Méthyl-4-pipéridone;
REFRACTIVE INDEX :1.460 - 1.462
APPEARANCE: yellowish liquid
BOILING  POINT :55 - 58 C at 10 mmHg
Storage: Store at room temperature
N-Methyl-4-piperidone was used to prepare N,N’-dimethylbispidinone by utilizing a double Mannich condensation method.
from:Acridine Raw Material

Sunday, November 30, 2014

Methylprednisolone is An apoptosis inducer

Methylprednisolone is a 6α-methyl derivative of prednisolone, a variation which reduces its binding to corticosteroid-binding globulin and increases penetration into target tissues.It alters gene expression, like prednisolone, through both the glucocorticoid and mineralocorticoid receptors.
Application; An apoptosis inducer
CAS Number: 83-43-2
Molecular weight: 374.47
Molecular formula: C22H30O5
Appearance: Crystalline powder
Solid state physics
Solubility: Soluble in acetone, chloroform
Storage: Store at room temperature

Monday, November 24, 2014

properties of Ruthenium(IV) oxide hydrate

CAS  : 32740-79-7
name:Ruthenium(IV) oxide hydrate
Molecular Weight: 133.07 (anhydrous basis)
Molecular Formula: RuO2•xH2O
Appearance: Powder
Physical State: Solid
Storage: Store at room temperature
Solubility: Insoluble in water. Soluble in HCl

Monday, November 17, 2014

Brief introduction of Palladium(II) chloride

name: Palladium(II) chloride
CAS : 7647-10-1
Purity: ≥99%
Molecular Weight: 177.33
Molecular Formula: Cl2Pd
This is used in the synthesis of semiconducting metal-containing polymers where the polypyrrole backbone has a conformational energy minimum and is nearly planar.
Appearance: Powder
Physical State: Solid
Solubility: Soluble in water, acetone, alcohol, hydrobromic acid, and hydrochloric acid.
Storage: Store at room temperature
Melting Point: 678-680 °C (lit.)
Boiling Point: 515.63 °C (Predicted)
Density: 4 g/cm3 at 25 °C