Lithium Aluminium

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What is the reaction when I quench lithium aluminium hydride with methanol? Please could you give me the equation, thanks Li[AlH4] + CH3OH = ?

mountain crusher replied: "Methanol will act similarly to water in that reaction: LiAlH4 + 3CH3OH => LiOMe + Al(OMe)3 + 4H2 Edit - Good catch Paul B. 4 MeOH."

Paul B replied: "That should of course have been 4 CH3OH"

Do you know any manufacturers of Aluminium/Lithium alloys? In small quantities for research purposes?

dear replied: "Dear, Thank you, am also fine like you then dear you are from which location because am in india - chennai - t.nagar. Because if you are in chennai by use "just dial -26666664" they will guide you properly."

Dave D replied: "These are primarily used for the production of methamphetamine by reductive animation of phenylanilene. (They serve as the catalyst). So your best bet would be to import them from India. Although it is illegal to purchase precursor chemicals such as this in the USA, there is no law against importing them. Go figure. Note to the DEA: You can easily get this guy's home address from his IP number by subpoenaing Yahoo. But you already knew that."

what would be the cost of lithium hydroxide, aluminium hydroxide, sodium hydroxide? what would be the cost of lithium hydroxide, aluminium hydroxide and sodium hydroxide? i tried a lot onlone for these details. but could not get any. if anyone could find their costs/kg, that would be really helpful. if possible give any webpages that has these details. thanks a lot

Bounty B replied: "Lithium hydroxide £24.80/100 g Aluminium hydroxide £13.50/500 g Sodium hydroxide £24.00/1 kg"

What is needed for the reduction of aldehyde/keytone to alcohol? I know you need a reducing agent such as lithium aluminium hydride but are there any other conditions such as acidic conditions (as with oxidation) or heating/reflux etc? And is this shown in an equation as: aldehyde/keytone - [O] --> alcohol??

unean_amigo replied: "sodium borohydride is better than lithium aluminum hydride if you want to reduce an alcohol. aldehydes/ketones do not oxidize to alcohols. aldehydes oxidize to carboxylic acids."

Do I really need to dry already anhydrous solvents? I am writing a method for a project that involves a reduction reaction using lithium aluminium hydride, which forms explosive hydrogen when in contact with water. I can buy anhydrous toluene so is there really any point in drying it again?? What is the worst that can happen?

gerry replied: "It depends on a number of factors linked to the type of reaction and other precautions that should also have been taken. In other words, more specific information is needed to carry out a method statement/risk assessment. Generally speaking, I would always test the toluene for water content before making such a decision."

biire2u replied: "Toluene is immiscible with water, so being anhydrous is a given. Edit: toluene can mix at 0.47 g/L, so it is slightly miscible. Therefore, toluene can gather some moisture from the air in storage, that is why it is better to re-dry it Humidity condensation is usually the source of moisture in this reaction, so unless you can find a room with zero humidity when you are mixing your Lithium hydride, it is best to dry it first. All you have to do is throw a small piece of lithium in water to see the reaction for yourself. Having the LIAH with large surface area of particles can usher an intense reaction without being completely dry"

fred k replied: "Toluene and water form an azeotrope, Just add and then distil off an extra few %. By the time the vapour temp is 110°C, the remaining toluene will be dry. So you could even buy 'normal' rather than anhydrous toluene and no analytical techniques or drying agents are needed. Add.. Sodium wire is a messy, wasteful and potentially hazardous technique. You need clean the sodium of oil and any 'skin' You have to wait an unknown time for the solvent to dry If any water is present the reaction produces hydrogen, which could pressurise / damage the container. You have to dispose of the used wire safely. Mol. sieve works, but again takes time and also has its environmental disposal problems. Azeodrying is the method that would be used on an industrial scale. This will remove sufficient water from the solvent and also dries the apparatus. The effects of ppm level water can be calculated and shown as negligible. ."

CB replied: "If you're using something as reactive towards water as lithium aluminium hydride, then the answer is yes, you should ensure the solvent is completely dry before using it. Just because a solvent is apparently immiscible with water does not mean it is dry enough for procedures such as this. We used to dry solvents (particularly ether) with sodium wire (put into the bottle via a 'sodium press' - probably worth something on EBay now!), but molecular sieves are probably a more straightforward approach nowadays. OK?"

Mike A replied: "Maybe I'm a cynic but I would never accept a supplier's description without first checking the actual specification either on the label or in his literature. That way you will know what he regards as "anhydrous" but I'll guarantee that it doesn't mean water is so low it can't be detected. A number of answers have suggested azeotroping out the water but this will still leave measurable amounts. With modern analysis if its not there at percent levels it will be at ppm or parts per trillion and seen in this way the word anhydrous is meaningless in this context and remember a little water can destroy a lot of your expensive reagent. I would use either molecular sieve or sodium wire as suggested in another answer but you need to remember that every time you open the container you allow in moist air."

How to write the chemical formula for compounds which result from a reaction? 1) sodium + Permangate 2) Potassium + dichromate 3) lithium + oxalate 4) aluminium + hyroxide 5) vanadium(ll) + oxygen 6) zinc (ll) + sulphate + 3 water 7) manganese (IV) + oxygen + water 8) calcium + sulphur 9) titanium(ll) + carbonate 10) iron(lll) + oxygen

Guray T replied: "To write the chemical formulas you have to know the oxidation numbers of common cations and anions. It is extremely difficult to state all of them here. I can write only the required formulas. (1) NaMnO4 (2) K2Cr2O7 (3) Li2C2O4 (4) Al(OH)3 (5) VO (6) ZnSO4 . 3H2O ( a hydrated salt) (7) MnO2 . H2O ( a hydrated salt) (8) CaS (9) TiCO3 (10) Fe2O3"

More Resources

Lithium aluminium hydride - Wikipedia, the free encyclopedia
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Lithium Aluminium Oxide CAS 12003-67-7
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Hydrides: Chemetall Lithium Division - The Lithium Company ...
Lithium Aluminium Hydride solution, typ. 15,3 % in THF / Toluene (typ. 3.6 M) 16853-85-3 ... Science News. Company News. Product News. Events. Lithium Resources ...

ZLX Tech | Lithium Aluminium Oxide
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Molecular weight of Lithium Aluminium Hydride
Calculate the molar mass of Lithium Aluminium Hydride in grams per mole or search for a ... Molecular weight of Lithium Aluminium Hydride. Unit Conversion ...

lithium aluminium hydride - Wiktionary
lithium aluminium hydride. Definition from Wiktionary, a free dictionary ... lithium aluminium hydride (uncountable) (abbreviation LAH) ...