| Search |
| [Next Page] |
Primordial chemicals
If someone can give way to oxalic acid without nitric acid or NaOH then one can use it instead of su ... |
15-11-2005 at 02:21
by: chromium |
Heavy metals from eastern batteries...
Hg was used only in certain battery types. ( even at good old times ) I do not belive those are sold ... |
22-10-2005 at 11:03
by: chromium |
Preparing NPK , Neutralizing Salts
H3PO4 concentrations by specific gravity.
Columns in tables are: specific gravity, % by weight, m ... |
16-10-2005 at 03:37
by: chromium |
Preparing NPK , Neutralizing Salts
#1
You have to measure specific gravity by weighing known volume of solution. There are tables avai ... |
15-10-2005 at 13:08
by: chromium |
Question about concentrating sulfuric acid
Boiling temperature rises when concentration goes up. 70% sulfuric acid needs 250C or more to give o ... |
13-10-2005 at 09:00
by: chromium |
Is this safe
Is it safe to drive the car? No one can give you clear answer. In my opinion its rather safe if you ... |
12-10-2005 at 22:39
by: chromium |
The WORST BOOKS Ever Written
I do not know much about explosive books but another book by J. Ledgard "Kings Chemistry Surviv ... |
11-10-2005 at 00:12
by: chromium |
U.S. Department of Justice has a new batch of records.
<I>It is not the police who pass these laws nor actually write them, but yet when you read the ... |
10-10-2005 at 14:56
by: chromium |
U.S. Department of Justice has a new batch of records.
My point was that laws are not made with intention to ban amateur science. Legislators may even be u ... |
10-10-2005 at 13:17
by: chromium |
Drying agents and adsorption
Other day i decided to concentrate 30% acetic acid. I thought to do this with magensium sulfate. I d ... |
10-10-2005 at 12:43
by: chromium |
U.S. Department of Justice has a new batch of records.
To be honest i think that people fear too much. There is no wichunt for amateur scientsts, just are ... |
10-10-2005 at 00:26
by: chromium |
Acquiring chemicals locally vs. ordering
Its good idea to talk with local supplyers. To talk, not to call. Do not ask at once anything specia ... |
9-10-2005 at 23:12
by: chromium |
Why DMF is controlled?
Chloroform and benzene can not be used in [i]"substances and preparations placed on the market ... |
9-10-2005 at 14:51
by: chromium |
2 questions
First is wrong, others are ok but fractions as coeficents are are often regarded as bad taste. |
8-10-2005 at 07:46
by: chromium |
Why DMF is controlled?
[quote][i]Originally posted by vulture[/i]
Listed substances does not necessarily mean they are dru ... |
6-10-2005 at 15:15
by: chromium |
Why DMF is controlled?
I plan to purchase some dimethyl formamide for experiments in home lab. I have friendly supplyer who ... |
6-10-2005 at 12:25
by: chromium |
cell phones
[quote][i]Originally posted by rogue chemist[/i]
Weak AC-It will charge, but at a much much slower ... |
1-9-2005 at 23:21
by: chromium |
What is the most ignorant thing you have ever done while conducting an experiment?
[quote][i]Originally posted by Reverend Necroticus Rex[/i]
Made possibly the worst mistake yet, and ... |
31-8-2005 at 03:43
by: chromium |
Separation of NaCl and KCl
to 12AX7: NaCl and KCl both dissolve in remarkable quantities. If temperature is 100C and we take 10 ... |
26-8-2005 at 15:41
by: chromium |
Separation of NaCl and KCl
Flame test is so sensitive to sodium that even minutest amount of it will turn flame yellow no matt ... |
26-8-2005 at 14:09
by: chromium |
Separation of NaCl and KCl
Solubility of NaCl is almost independent of temperature. KCl on contrary is much more soluble in hot ... |
24-8-2005 at 11:53
by: chromium |
Disposal of mercury salts (hazardous waste in general).
BaSO4 is common mineral that can be found everywhere in the world. So it can not be remarkably dange ... |
18-8-2005 at 11:44
by: chromium |
Graphite bisulfate and other graphite salts
I have not done this synth but H2SO4 + K2Cr2O7 is commonly used oxidising mixture that oxidises almo ... |
28-7-2005 at 00:52
by: chromium |
Etching Pyrex to "Frost" or Roughen Surface
One more idea:
What if you spray some paint (that resists HF and can be dissolved with organic so ... |
18-7-2005 at 11:06
by: chromium |
dmso for noobs
Not always. For example DMSO will react with Na at room temperature, DMF will not. (I have book that ... |
8-7-2005 at 13:56
by: chromium |
| [Next Page] |
