PREPARATION AND INFRARED SPECTRA OF DIVINYL SULPHIDE, 2-METHYL-1,3-THIOXOLANE, AND 1,4-THIOXANE

1959 ◽  
Vol 37 (6) ◽  
pp. 1104-1108 ◽  
Author(s):  
K. K. Georgieff ◽  
A. Dupré

Dehydration of thiodiglycol at 195°–230° with potassium hydroxide produced a 36% yield of divinyl sulphide, 9–10% of 2-methyl-1,3-thioxolane, 7–8% of 1,4-thioxane, and 3.5% of vinyl 2-hydroxyethyl sulphide. Physical properties and infrared spectra are reported. Divinyl sulphide of high purity for polymer work was obtained by distillation in a Podbielniak column. Precautions that must be observed in the preparation, distillation, and storage are given.

1971 ◽  
Vol 10 (03) ◽  
pp. 245-251 ◽  
Author(s):  
P. Richards ◽  
W. C. Eckelman

SummaryThe full potential use of technetium has not been achieved despite its ideal physical properties, dosimetry and availability because of the complex preparations required for 99mTc radiopharmaceuticals. One of the goals of our work is to develop techniques for the preparation of high-purity 99mTc compounds which can be easily prepared, ideally by adding pertechnetate to a prepared solution.The use of stannous ion as reducing agent for technetium makes it possible to obtain such one-step, high-purity products. All non-radioactive components can be premixed in a single vial before addition of the radioactive pertechnetate. No final pH adjustment, further chemical manipulation or purification is required.Procedures for two instantly labeled compounds have been developed to date: 99mTc DTPA and 99mTc HSA. The 99mTc DTPA is prepared by adding pertechnetate to a previously prepared solution of stannous ion and CaNa3 DTPA which has been stored at pH 4. The 99mTc HSA is prepared by adding pertechnetate to a solution of stannous ion and HSA. The parametric variations and analytical techniques involved in formulating these procedures are described. It appears that development of kits for other biologically interesting compounds may be possible using similar procedures.


Alloy Digest ◽  
1953 ◽  
Vol 2 (6) ◽  

Abstract GLOBEIRON is a high purity, thoroughly killed, low carbon iron. It is ductile, tough, and has high magnetic permeability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: Fe-1. Producer or source: Globe Steel Tubes Company.


Alloy Digest ◽  
2005 ◽  
Vol 54 (7) ◽  

Abstract Aluminum 1xxx series alloys are nonhardenable by heat treatment. They have high purity, high conductivity, and good corrosion resistance and are easily formed. This datasheet provides information on composition, physical properties, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, machining, joining, and surface treatment. Filing Code: AL-395. Producer or source: Alcoa Engineered Products.


Alloy Digest ◽  
2000 ◽  
Vol 49 (6) ◽  

Abstract Sandvik Bioline High N is a molybdenum-alloyed stainless steel for implant applications. Corrosion resistance to physiological environments is good. The alloy is of high purity and has an excellent surface finish. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance. Filing Code: SS-793. Producer or source: Sandvik.


Alloy Digest ◽  
2002 ◽  
Vol 51 (7) ◽  

Abstract Carpenter titanium alloy Ti 6Al-4V ELI is a high-purity (extra-low-interstitial) version of Ti 6Al-4V (see Alloy Digest Ti-60, August 2002). The alloy is alpha plus beta and has good biocompatibility. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive, shear, and bearing strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: TI-129. Producer or source: Carpenter Technology Corporation.


Alloy Digest ◽  
1975 ◽  
Vol 24 (4) ◽  

Abstract NJZ ALLOY No. 1 is produced from high-grade, high-purity zinc with additions of lead, cadmium and iron. It gives excellent deep-drawing performance because of a combination of low hardness and strength, high ductility and very little tendency to work harden. It can be formed readily by conventional processes including spinning and its applications include such items as deep-drawn cans and jewelry. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, and machining. Filing Code: Zn-18. Producer or source: New Jersey Zinc Company.


Author(s):  
Wiqayatun Khazanah ◽  
Nurliana Nurliana ◽  
Rini Safitri

One of the Acehnese traditional food  preserved by the addition of salt, acid and dried was sie balu. The preservation method may lead to changes in the structure and nutritional content. Sie balu with the addition of vinegar, garlic and ginger can reduce the value of water activity (aW), pH and bacterial counts. This condition affects the physical properties and sensory of sie balu. Irradiation can control pathogenic microorganisms in meat without affecting the physical condition. Low-dose irradiation is able to maintain the desired sensory attributes nutritious food products. This study aims to determine the characteristics of the sensory and physic sie baluthat irradiated with increasing doses and the shelf life of 3-6 weeks. Sie balu was made of 10 kg fresh beef, dried in the sun to dry, vacuum and irradiated at doses of 5, 7 and 9 kGy. Sensory test conducted by taste sie balu by trained panelists and fill out the hedonicform. The physical properties based on pH and aW. The microbe total calculated used Total Plate Count.The results showed that the irradiation dose significantly (P <0.05) affected on microbe total, aroma, color, texture and taste of sie balu. Storage time does not affect the sensory properties. Irradiation dose and storage time significantly (P <0.05) on pH and aWsiebalu. The study concluded that irradiation can improve the physical properties, sensory and microorganisme reductionof sie balu.


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