seaweed residue and finally‚ the recovery of the carrageenan from the solution. Hence‚ product of this extraction is called refined or filtered carrageenan. In the second method‚ carrageenan is not actually extracted but rather‚ everything soluble in alkali and water is washed out
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to around 2800 BC in Ancient Babylon. In the reign of Nabonidus (556–539 BCE) a recipe for soap consisted of uhulu [ashes]‚ cypress [oil] and sesame [seed oil] "for washing the stones for the servant girls". A formula for soap consisting of water alkali‚ and cassia oil was written on a Babylonian clay tablet around 2200 BC. The Ebers papyrus (Egypt‚ 1550 BC) indicates that ancient Egyptians bathed regularly and combined animal and vegetable oils with alkaline salts to create a soap-like substance
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discovered by Andrés Manuel del Río‚ a Spanish-born Mexican mineralogist‚ in 1801 [1]. Some sources say Vanadium is soft because it is ductile [1]. Vanadium is harder than most metals and steels [1] It is resistant to corrosion and it is stable against alkalis‚ sulfuric and hydrochloric acids[1]. It is oxidized in air at about 933 K (660 °C‚ 1220 °F) [1]. This paper will discuss the effects of Vanadium on the environment and Vanadium’s properties. Chemical Properties: Vanadium is a transitional metal
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the plasticizers * Fabric construction * Method of desizing‚ and * Method of washing-off Types of desizing: a)Hydrolytic desizing * Rot steeping * Alkali steeping * Acid steeping * Enzymatic desizing - b)Oxidative desizing- * Bromide desizing * Chloride desizing * Ammonium per sulphatedesizing The most commonly
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urea b) The liquid form is used as a cooling agent (refrigerant) in refrigerators c) As a raw material for the manufacture of nitric acid in the Ostwald process d) To be converted into nitric acid used for making explosives e) As an alkali to prevent the coagulation of latex so that latex can remain in the liquid form f) To produce ammonium chloride used as an electrolyte in dry cells g) As a cleaning agent to remove grease h) Used in the manufacture of synthetic fibers
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Bookingcode:ZRWNDA M Name Flight RIFFO / PAULA MS LH0975 / 21.Feb 15 DOC Boarding Pass operated by Lufthansa Cityline Aberdeen - Frankfurt Departure Gate Boarding Time Departure Time Seat Number Class Baggage Drop Off 002 04:55 05:25 5C Economy Check-in Counter 7-10 Boarding Number Airline etix Passenger Status Checked Baggage 021 LUFTHANSA 220 2353521905 General Information 1. This document is your boarding pass. With this boarding pass you may access the gate area and board the aircraft
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Apparatus: Safety spectacles Weighing bottle Balance capable of weighing to within 0.01g Spatula Stirring rod with rubber end Dropping pipette Wash bottle of distilled water Funnel Volumetric flask‚ 250 cm3 Beaker‚ 250 cm3 Retort stand Burette clamp Burette‚ 50cm3 Pipette‚ 25cm3 Pipette filler Beaker‚ 100cm3 White tile Conical flask‚ 250cm3 Reagents used: Distilled Water Hydrated Sodium Borate 1.0 M Hydrochloric acid Screened methyl orange Sodium Borate solution
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concerned with bonding‚ and therefore conductivity will not be a trait of non-metal elements in period three. Another expected trend across the period is that the pH of the oxide solution will change from basic on the left of the group (especially alkali metals) to acidic on the right‚ once dissolved in water. This characteristic is then likely to affect the last of the properties being looked at‚ which is the reaction the oxide caused when exposed to hydrochloric acid and sodium hydroxide. The basic
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THE INTRODUCTION TO SOAP MANUFACTURE BY W. H. SIMMONS‚ B.Sc. (Lond.)‚ F.C.S. AND H. A. APPLETON It has been said that the use of soap is a gauge of the civilisation of a nation‚ but though this may perhaps be in a great measure correct at the present day‚ the use of soap has not always been co-existent with civilisation‚ for according to Pliny (Nat. Hist.‚ xxviii.‚ 12‚ 51) soap was first introduced into Rome from Germany‚ having been discovered by the Gauls‚ who used the product obtained
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Hwa Chong Institution (High School) Secondary 4 End of Year Examinations Chemistry Revision Notes List of topics: 1. Atomic Structure 2. Separation Techniques 3. Chemical Bonds and Bonding (Ionic‚ Covalent) 4. Metals 5. Properties and structures of compounds 6. Qualitative Analysis 7. Acids‚ Bases and Salts 8. Chemical Periodicity 9. Chemical Calculations 10. Air and Environment 11. Electrochemistry (Including Redox reactions) 12. Thermochemistry 13. Rates of Reaction 14. Chemical
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