ldanielrosa
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sodium nitrite impurities
I purchased some sodium nitrite, but may have the wrong grade. The label indicates it has "0.1% mono + dimethyl naphthalein sulfonates added". I
really should have read the information on it before I bought it, but I hope it's still useful.
I'm having trouble finding much on this one. There are MSDSs that list this with other things, but I guess I'm not looking in the right place.
Some of the questions I have are: How soluble is it in water? What are the melting and boiling points? How does it behave with organic solvents? Is
there a good way to remove it?
On a separate note- I'll finally be back in a chemistry class for winter quarter. Alas, my work schedule changed slightly and I hope I can reschedule
earlier in the day.
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nitric
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It seems your impurity may be a surfactant and may be used to make the powder free flowing, but if it will interact with your reactions depends on how
sensitive the reaction is, but it should not react in most cases.
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UnintentionalChaos
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It does indeed like like something added to make the powder free-flowing, which is not unusual. As a sodium sulfonate salt, it should be pretty water
soluble and with the big naphthyl moiety, it will also be soluble in most organics. There's so little of it that for most everything, I'd just ignore
it. If a reaction for some reason demands incredibly pure material, recrystallization from water should remove it.
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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Sedit
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Everything I have found suggest that its used as an antimicrobial compound. Is there a need for that here or something?
Knowledge is useless to useless people...
"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the
fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story
before."~Maynard James Keenan
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Panache
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Quote: Originally posted by Sedit  | | Everything I have found suggest that its used as an antimicrobial compound. Is there a need for that here or something? |
not the nitrite you twit the additive the sulfonates. lol
Btw has anyone ever seen their sodium nitrite turn grey over time? I had some i haven't used for awhile in the back of the solid oxidisers drawer and
it has turned light grey from light yellow?
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Sedit
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Not the nitrite you twit the added sulfonate is whats used as an antimicrobial  .
BTW Its not conclusive but I noticed that as my nitrite would reoxidise back to nitrate it would take on a greyish color. I always assumed till now it
was because of impurities.
Knowledge is useless to useless people...
"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the
fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story
before."~Maynard James Keenan
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ldanielrosa
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Thanks for the input folks. I hope it doesn't present any issues. I'm curious about the boiling point, but that may not be very important.
It is amusing though- the words "food grade" are only 4cm from a skull and crossbones.
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The WiZard is In
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| Quote: Originally posted by ldanielrosa | Thanks for the input folks. I hope it doesn't present any issues. I'm curious about the boiling point, but that may not be very important.
It is amusing though- the words "food grade" are only 4cm from a skull and crossbones. |
FOOD POISONING - RUSSIA (PERM): SODIUM NITRITE
**********************************************
A ProMED-mail post
<http://www.promedmail.org>
ProMED-mail is a program of the
International Society for Infectious Diseases
<http://www.isid.org>
Date: Wed 8 Sep 2010
Source: NewsProm.Ru news agency [in Russian, trans. Corr.ATS]
<http://www.newsprom.ru/news/128394203027103.shtml>
A total of 40 workers in a confectionery factory in Perm have suffered
poisoning after having lunch in the canteen. 3 of them are being treated in
the intensive care unit due to their severe condition. Rospotrebnadzor
[Federal Service for Consumer Affairs and Human Welfare] specialists have
found sodium nitrite on the plates and in the table salt at the canteen.
Criminal charges are being pursued according to the regulations for such
incidents.
--
communicated by:
ProMED-RUS
<promed-rus@promedmail.org>
[Sodium nitrate has on a number of occasions been mistaken for table salt.
Clinical signs of ingestion may include gastroenteritis, abdominal pains,
dizziness, bloody diarrhea, convulsions, and collapse. Purging and diuresis
are expected. If the victim receives small, repeated doses there may be
headache and mental impairment. Generally in the case of mistaking sodium
nitrate for sodium chloride, the dose may be larger for large meals typical
of celebrations. Rare cases of nitrates being converted to the more toxic
nitrites have been reported.
Sodium nitrate has been used in curing meat for centuries. Bacterial action
converts the nitrate to nitrite, which kills the organism responsible for
botulism poisoning. Generally sodium nitrite has replaced sodium nitrate,
except in slow-cured hams.
Nitrite is added to certain foods to prevent the growth of the
spore-forming bacterium _Clostridium botulinum_, whose toxin causes
botulism, leading to paralysis and, potentially, death. The word botulinum
comes from the Latin word botulus, meaning sausage, which was responsible
for many deaths centuries ago before curing with nitrite was used. In
addition to serving as an antimicrobial, nitrite is used to produce the
characteristic flavor, texture, and pink color of cured meats.
At significant blood levels, the nitrite's oxidation of the iron in
hemoglobin from the ferrous to the ferric state yields methemoglobin, which
does not carry oxygen and imparts a brown hue to the blood. Symptoms of
methemoglobinemia include headaches, fatigue, tachycardia (fast heart
rate), weakness, and dizziness. As oxygenation of tissues decreases to the
point of becoming truly inadequate, dyspnea (shortness of breath),
acidosis, arrhythmias (irregular heart rhythms), coma, convulsions, and
even death may occur. - Mod.TG
[see also:
2009
---
Nitrate poisoning, caprine - India: (TN), susp. 20091023.3659
Food poisoning, fried rice - Malaysia: (Kedah), nitrate susp., RFI
20090406.1326
Food poisoning - Russia: (SVE) sodium nitrate susp 20090123.0289
2008
---
Toxic ingestion, sodium nitrite - China (Guangdong) 20080225.0754
2006
---
Sodium nitrate poisoning, fatal - Russia (Altay Rep) 20060810.2241
Toxic ingestion, sodium nitrite - China (Hainan) 20060220.0552
2005
---
Sodium nitrate poisoning - Russia (Tula) 20051215.3600]
*##########################################################*
************************************************************
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djh
----
Paracelsus, sometimes called the father of toxicology, wrote —
German: Alle Ding' sind Gift, und nichts ohn' Gift; allein die Dosis macht, daß ein Ding kein Gift ist.
"All things are poison and nothing is without poison, only the dose permits something not to be poisonous."
http://en.wikipedia.org/wiki/Paracelsus
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