well, does anyone know the vaporization points for ethanol and methanol (obvious, H20 is 212 F or 100 C)

im fairly certain methanol's is lower, but i need to know how much leeway i have

i (will) have a mixture of ethanol, methanol and water, and i would like to be left with just ethanol, my proposed procedure is as follows:

plan 1

freeze water, remove

heat mixture of methanol/ethanol (the amount of water left over will be low enough to be acceptable) to the vaporization point of methanol, distill the methanol out, dispose of

distill the ethanol for purity.

OR

plan 2

distill the methanol.ethanol.water mixture, disposing of the methanol, then increasing the temperature of the whole mix to the vapo. point of ethanol, then taking the collected methanol, and disposing of the water.

which should work better, or is there an even more efficient/quicker way fo doing what i want?

thanks

You could look it up on google pretty easily. I think the boiling pt. of ethanol and methanol is around 70 C. I might be wrong!

thats doesnt look the easiest way to get the water out,,,,try throwing some epsom salts into the methanol/ethanol,,thatl get the water out,,,,,and splitting ethanol from methanol is going to be fun,,,,methanols evapoaration point is 67c or 68c, cant remember which,,,im pretty sure ethanol is the same,,,why do you wish to separate the methanol from the ethanol????

Plan 1 will definately not work. All 3 components must freeze together at the same temperature.

Plan 2 might sort of work if you have a good fractioning distallation column, but will not produce pure ethanol because the azeotrope mixture will distil off the other unwanted substances vapors. You could probably get it to 95% maybe!

Boilint Pt. Methanol = 64.7 C

Boiling Pt. Ethanol = 78.3 C

because while ethanol is a nice, drinkable alcohol, methanol is a scary, wood-spirit, blinding paint-thinner-like death chemical...

see my dillemma?

thank you much, that's all i needed

it sounds like your drinking the shit

If you're talking about denatured alcohol, it usually has other stuff in it, like acetone, and/or pyridine or some shit.

Boiling point of ethanol is app. 78.3C, and

the boiling point of methanol is app. 64.6C

You could just buy some everclear, but I guess you must be a minor, huh?

you could ferment your own. I know there is a 3 day process I read about at http://www.ucc.ie/ucc/depts/chem/dolchem/html/comp/ethanol.html You could also take a little bit longer and mix maybe some sugar, yeast, bananas, or even something citric like oranges or pinapples and let them ferment for a couple of weeks (they ferment faster with warmth). Then distill the mixture off and you would have almost pure ethanol

[This message has been edited by 0.S. Sparkel (edited 09-24-2003).]

Ask and ye shall recieve...



3806. Ethyl Alcohol.

Ethanol; absolute alcohol; anhydrous alcohol; dehydrated alcohol; ethyl hydrate; ethyl hydroxide. C2H6O; mol wt 46.07. C 52.14%, H 13.13%, O 34.73%. C2H5OH.

Manuf: by fermentation of starch, sugar, and other carbohydrates; from ethylene, acetylene, sulfite waste liquors, and synthesis gas (CO + H); by hydrolysis of ethyl

sulfate, and oxidation of methane. Toxicity: G. S. Wiberg et al., Toxicol. Appl. Pharmacol. 16, 718 (1970). Embryotoxicity in mammals: N. A. Brown et al.,

Science 206, 573 (1979). Possible mechanism for actions of ethanol on the brain: G. Aston-Jones et al., Nature 296, 857 (1982). Ethanol-induced chromosomal

abnormalities in mice: M. H. Kaufman, ibid. 302, 258 (1983). Disruption of reproductive function in female primates following alcohol self-administration: N. K.

Mello et al., Science 221, 677 (1983). Review of metabolism and toxicity: C. S. Lieber in Reviews in Biochemical Toxicology vol. 5, E. Hodgson et al., Eds. (Elsevier,

New York, 1983) pp 267-312; of pharmacology: L. Pohorecky, J. Brick, Pharmacol. Ther. 36, 335-427 (1988); of hepatotoxicity: C. S. Lieber, L. M. DeCarli, J.

Hepatol. 12, 394-401 (1991). General reviews: P. Baud, "Ethyl Alcohol Industry" in Grignard, Trait de Chimie Organique vol. 5 (Masson, 1937) pp 841-975;

Zabel, Chem. Inds. (now Chem. Week) 64, 212 (1949); Faith, Keyes Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New

York, 4th ed., 1975) pp 355-364; P. D. Sherman, P. R. Kavasmaneck, "Ethanol" in Kirk-Othmer Encyclopedia of Chemical Technology vol. 9 (Interscience, New York,

3rd ed., 1980) pp 338-380.

Clear, colorless, very mobile, flammable liquid; pleasant odor; burning taste. Absorbs water rapidly from air. d420 0.789. bp 78.5 deg. mp -114.1 deg. nD20 1.361.

Flash pt, closed cup: 13 degC. Miscible with water and with many organic liquids. Keep tightly closed, cool, and away from flame! LD50 in young, old rats (g/kg): 10.6,

7.06 orally (Wiberg). The terms 95% alcohol and alcohol (when used alone) refer to a binary azeotrope having a distillate composition of 95.57% ethyl alcohol (by

wt) and bp 78.15 deg. Alcohol, USP is specified as containing not less than 92.3% and not more than 93.8% by weight, corresponding to not less than 94.9% and not

more than 96.0% by vol of C2H5OH at 15.56 deg. d2525 0.810; d 0.816 at 15.56 deg (60 degF). Diluted alcohol, prepd from equal vols 95% alcohol and water, contains about

41.5% by wt or about 48.9% by vol of C2H5OH. d2525 0.931; d 0.936 at 15.56 deg (60 degF). See U.S.P. XXI, 22, 1530 (1985).

Caution: Nausea, vomiting, flushing, mental excitement or depression, drowsiness, impaired perception, incoordination, stupor, coma, death may occur, cf.

Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams Wilkins, Baltimore, 5th ed., 1984) Section III, pp 166-171.

USE: Most ethyl alcohol is used in alcoholic beverages in suitable dilutions. Other uses are as solvent in laboratory and industry, in the manufacture of denatured

alcohol, pharmaceuticals (rubbing compds, lotions, tonics, colognes), in perfumery, in organic synthesis. Octane booster in gasoline. Pharmaceutic aid (solvent).

THERAP CAT: Antiseptic.

THERAP CAT (VET): Antiseptic. To destroy nerve tissue. Solvent and dehydrating agent.

6024. Methanol.

Methyl alcohol; carbinol; wood spirit; wood alcohol. CH4O; mol wt 32.04. C 37.48%, H 12.58%, O 49.93%. CH3OH. Originally obtained by the destructive

distillation of wood, now usually manuf from hydrogen and carbon monoxide or carbon dioxide, also by oxidation of hydrocarbons. Review: Faith, Keyes

Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 524-529; L. E. Wade et al., in Kirk-

Othmer Encyclopedia of Chemical Technology vol. 15 (Wiley-Interscience, New York, 3rd ed., 1981) pp 398-415. Review of metabolism and toxicology: J.

Liesivuori, H. Savolainen, Pharmacol. Toxicol. 69, 157-163 (1991).

Flammable, poisonous, mobile liq. Slight alcoholic odor when pure; crude material may have a repulsive, pungent odor. Burns with a non-luminous, bluish flame.

d40 0.8100; d415 0.7960; d420 0.7915; d425 0.7866. mp -97.8 deg. bp760 64.7 deg; bp400 49.9 deg; bp200 34.8 deg; bp100 21.2 deg; bp60 12.1 deg; bp40 +5.0 deg; bp20 -6.0 deg; bp10 -16.2 deg; bp5

-25.3 deg; bp1.0 -44.0 deg; nD15 1.33066; nD20 1.3292. Vapor density: 1.11 (air = 1). Flash pt, closed cup: 54 degF (12 degC). Ignition temp 470 degC (878 degF). Explosive limits (%-vol

in air): 6.0 to 36.5. Crit temp 240.0 deg; crit pressure 78.5 atm. Specific heat at 20-25 deg = 0.595 to 0.605. Dipole moment 1.69. Miscible with water, ethanol, ether,

benzene, ketones, and most other organic solvents. Forms azeotropes with many compds. Density, freezing and boiling point data of methanol-water mixtures: 10%

methanol by vol (d425, fp, bp): 0.9836, -5 deg, 92.8 deg; 20% methanol: 0.9695, -12 deg, 87.8 deg; 30% methanol: 0.9572, -21 deg, 84.0 deg; 40% methanol: 0.9423, -33 deg, 80.9 deg; 50%

methanol: 0.9259, -47 deg, 78.3 deg; 60% methanol: 0.9082, -57 deg, 75.9 deg. Methanol usually is a better solvent than ethanol, dissolves many inorganic salts, e.g., sodium

iodide 43%, calcium chloride 22%, ammonium nitrate 14%, copper sulfate 13%, silver nitrate 4%, ammonium chloride 3.2%, sodium chloride 1.4%.

Caution: Poisoning may occur from ingestion, inhalation or percutaneous absorption. Acute Effects: Headache, fatigue, nausea, visual impairment or complete

blindness (may be permanent), acidosis, convulsions, mydriasis, circulatory collapse, respiratory failure, death. Death from ingestion of less than 30 ml has been

reported. Usual fatal dose 100-250 ml. Chronic: Visual impairment, cf. Patty's Industrial Hygiene and Toxicology vol. 2C, G. D. Clayton, F. E. Clayton, Eds. (Wiley-

Interscience, New York, 3rd ed., 1982) pp 4528-4541.

USE: Industrial solvent. Raw material for making formaldehyde and methyl esters of organic and inorganic acids. Antifreeze for automotive radiators and air

brakes; ingredient of gasoline and diesel oil antifreezes. Octane booster in gasoline. As fuel for picnic stoves and soldering torches. Extractant for animal and vegetable

oils. To denature ethanol. Softening agent for pyroxylin plastics. Solvent and solvent adjuvant for polymers. Solvent in the manuf of cholesterol, streptomycin,

vitamins, hormones, and other pharmaceuticals.

Goods Luck