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| | From:  Guy_SoCa (Original Message) | Sent: 3/23/2008 5:22 AM |
Does anyone know the 3-Nitrophthalic Acid's density??
I cant seem to find it anywhere.. CRC does not have it
Thanx :) |
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| | | From: ·Steve· | Sent: 3/23/2008 5:56 AM |
I can do some searching, but if this is for the luminol synthesis, do you need to know the density for any of the calculations? 3-Nitrophthalic acid is a solid compound. Steve |
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I need its density to get the mmoles and I only have its molecular Weight and I would need to use its density..
Thanx in advanced :) |
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| | | From: ·Steve· | Sent: 3/23/2008 7:22 PM |
If I understand correctly, you weighed a certain amount of solid 3-nitrophthalic acid at the beginning of the experiment. You can convert this amount to moles by dividing the mass in grams by the molecular weight (and multiplying by 1000 mmol/mol to convert to mmoles). Its density should not enter the picture at all. If it was a liquid and you measured its volume initially, then you would need the density to convert volume to grams and then to moles. But for solids, you don't need the density at all for converting to moles, since you would normally just weigh them on the balance and have the grams right from the get-go. Besides, the density of 3-nitrophthalic acid is not readily available; it's not in the CRC Handbook or on the Internet. I could not find it. If you needed it, it should have been provided with the experimental procedure, or at least be easier to obtain!  Steve |
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Thanx for all your help, and yes, I was confused and I measured grams, not mLs..
I didn't need it
Sorry, and THANX a lot! |
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| | | From: ·Steve· | Sent: 3/24/2008 7:22 AM |
Good deal, because it looked like that density value was going to be tough to find! |
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