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Author: Subject: Sodium Borohydride 98% granules - EU - 150 EUR/1kg
stoichiometric_steve
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[*] posted on 6-11-2019 at 10:52
Sodium Borohydride 98% granules - EU - 150 EUR/1kg


Minimum order 1kg. 5% discount on total for every additional kg.

Shipping varies, 20-40 EUR based on destination and quantity. Free shipping from 5kg upwards. Will only ship within EU.

Please PM if interested.

I'm a 14 year member of SM with a proven track record.

Will provide member names (subject to their respective approval) i've done business with if requested.

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[*] posted on 6-11-2019 at 20:06


Ooh, that's not a bad price at all. :cool:
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Loptr
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[*] posted on 7-11-2019 at 18:00


I have dealt with stoichiometric_steve a few times and had good experiences. The only trouble that came up was on my end when I changed my mind about an item after it had already been purchased, but he refunded my money and things were good.

I would recommend him.

Also, granules sound a lot better than powder.

[Edited on 8-11-2019 by Loptr]




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woelen
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[*] posted on 8-11-2019 at 00:01


Any idea how well this NaBH4 will keep? I purchased 50 grams of NaHBH4 some years ago (a fine powder), but it has become one big lump, really hard to handle. It still is quite active, but the lump is so hard that it is not possible to scrape off some of the material with a standard plastic spatula or scoop. I purchased another amount (25 grams) more recently, but this also tends to get hard and difficult to handle. So, now I am inclined to not buy it anymore, despite the fact that it is a really interesting chemical.




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DraconicAcid
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[*] posted on 8-11-2019 at 00:07


Quote: Originally posted by woelen  
Any idea how well this NaBH4 will keep? I purchased 50 grams of NaHBH4 some years ago (a fine powder), but it has become one big lump, really hard to handle. It still is quite active, but the lump is so hard that it is not possible to scrape off some of the material with a standard plastic spatula or scoop.


You should be able to put it in a ziploc bag and un-lump it with a hammer.




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woelen
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[*] posted on 8-11-2019 at 01:31


Not if the material is in a glass bottle with a somewhat narrow open end. I have to shatter the glass, but then I get little pieces of glass in the material.



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[*] posted on 8-11-2019 at 08:45


Shaking it won't break the lumps, I presume?
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DavidJR
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[*] posted on 8-11-2019 at 14:11


Quote: Originally posted by woelen  
Not if the material is in a glass bottle with a somewhat narrow open end. I have to shatter the glass, but then I get little pieces of glass in the material.


What about dissolving it in aqueous dilute NaOH? Such solutions are moderately stable (and are commercially available). You could also partially dissolve it but leave the rest as a solid lump in the existing container for future use.
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[*] posted on 8-11-2019 at 14:43


Quote: Originally posted by DavidJR  
Quote: Originally posted by woelen  
Not if the material is in a glass bottle with a somewhat narrow open end. I have to shatter the glass, but then I get little pieces of glass in the material.


What about dissolving it in aqueous dilute NaOH? Such solutions are moderately stable (and are commercially available). You could also partially dissolve it but leave the rest as a solid lump in the existing container for future use.

The problem is, that it slowly hydrolyzes in solution. First I thought, that you could probably use Methanol, because its quite soluble in it(130g/L) but even in Methanol it slowly decomposes.
Acording to wikipedia a solution in MeOH decomposes completly in about 90 Minutes at 20°C :(

[Edited on 8-11-2019 by Tellurium]
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[*] posted on 8-11-2019 at 18:55


I always thought this was an interesting purification using water, where they claim precipitation of anhydrous sodium borohydride.

Attachment: Method for Preparing Anhydrous Sodium Borohydride_US2856274.pdf (325kB)
This file has been downloaded 65 times





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stoichiometric_steve
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[*] posted on 10-11-2019 at 01:08


Quote: Originally posted by woelen  
Any idea how well this NaBH4 will keep?


The granules keep surprisingly well, of course they also harden a bit over time, but not nearly as much as as powder would.

That's why my initial purchase was that big, but i don't have any use for it anymore, hence the sale.
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[*] posted on 10-11-2019 at 06:48


Quote: Originally posted by stoichiometric_steve  
Quote: Originally posted by woelen  
Any idea how well this NaBH4 will keep?


The granules keep surprisingly well, of course they also harden a bit over time, but not nearly as much as as powder would.

That's why my initial purchase was that big, but i don't have any use for it anymore, hence the sale.


No use? Did you get out of chemistry?




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stoichiometric_steve
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[*] posted on 11-11-2019 at 08:11


Nah, i just don't have as much time anymore - kids and all, you know...
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[*] posted on 12-11-2019 at 10:14


stoichiometric_steve - involve your kids in chemistry, they love science...
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[*] posted on 26-11-2019 at 08:08


I can absolutely vouch for steve, my NaBH4 came today without any Problem! :)
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[*] posted on 1-12-2019 at 18:47


Lol, seems like the price gone up.
He wanted more than double the original price of 150Euro/Kg.
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stoichiometric_steve
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[*] posted on 2-12-2019 at 14:44


Quote: Originally posted by Mateo_swe  
Lol, seems like the price gone up.
He wanted more than double the original price of 150Euro/Kg.


Let's not forget you blatantly lowballed me, and that's not how i play. Get your shit elsewhere.
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[*] posted on 3-12-2019 at 13:56


Well I offered 100Euro for half a kg (ie. 200Euro/kg), is that blatantly lowballing??
You do offer it for 150Eur/kg in this sell ad, right?
You said you wanted something around 200Euro for 500g (ie 400Euro/kg).
I didnt find this price ok so i offered what i seemed reasonable, especially since it was more than you ask for in this sell post.
But it´s OK, keep your stuff.
I can live without it.
But others might be interested to know that the price isnt the advertised one, its 266% more.
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