Buy "Nigari" at an oriental store. It is magnesium chloride used for making Tofu.
Dan On Tue, Jan 12, 2010 at 2:41 PM, Annie B Smythe <[email protected]> wrote: > LMAO Steve, my head is spinning. Just something that is safe to consume > without poisoning myself:) > > Annie > > "Not everything that counts can be counted, and not everything that can be > counted counts." (Sign hanging in Einstein's office at Princeton) > > > Norton, Steve wrote: >> >> Are you considering Magnesium Chloride that is specified as laboratory >> grade and not just technical grade? Here is a definition of grades from >> a chemical supplier that defines laboratory grade: >> >> " DEFINITION OF GRADES >> >> Reagent ACS -- Meets or surpasses latest American Chemical Society >> standards for purity. >> Reagent -- Does not exceed maximum limits of significant impurities as >> stated. Does not have ultrastringent requirements of Reagent ACS. >> Laboratory Grade -- Equivalent in purity to United States Pharmacopeia >> (USP) and National Formulary (NF) listings. However, they are not >> offered for food, drug, or medicinal use of any kind. >> Practical Grade -- Sufficiently high quality for use in many syntheses >> and other applications. >> Technical Grade -- Selected commercial grades, scrupulously clean, and >> of reasonable chemical purity. Where usable, most economical grade and >> suitable for educational purposes." >> >> There is Magnesium Chloride used for de-icing roads and sidewalks that I >> would be hesitant to consider for use. I would definitely want to see an >> MSDS or assay for it. >> - Steve N >> >> -----Original Message----- >> From: Annie B Smythe [mailto:[email protected]] Sent: Tuesday, >> January 12, 2010 9:06 AM >> To: [email protected] >> Subject: Re: CS>Chemistry question ? >> >> Thank you Steve:) >> >> I've been looking for Magnesium Chloride so I can make it up by the half >> gallon or gallon, and all the 'grade' terminology is a little confusing. I >> know pharmaceutical grade and food grade are ok for consumption, and I >> figured lab grade would have to be mostly pure, but I wasn't sure that >> technical grade wasn't just another name for lab grade, and what do they use >> technical grade for anyway? I just don't want to use the wrong thing. :/ >> >> >> Annie >> >> "Not everything that counts can be counted, and not everything that can be >> counted counts." (Sign hanging in Einstein's office at Princeton) >> >> >> Norton, Steve wrote: >>> >>> Here is a good source of info: >>> http://yarchive.net/chem/chemical_grades.html >>> >>> I frequently use reagent grade chemicals internally. If you go to the >>> FDA definition of allowable pharmaceutical grade impurities you will >> >> see >>> >>> almost no difference between reagent and pharmaceutical grade >> >> chemicals. >>> >>> Actually pharmaceutical grade is often less stringent than reagent >>> grade. That is because reagent grade chemicals are often used in >> >> making >>> >>> pharmaceuticals. >>> A main issue is the amount of heavy metals in the chemical. Usually >> >> you >>> >>> can request a copy of an assay of the reagent or technical grade >>> chemical and see what if any heavy metals are present. If you use >>> chelators regularly (bentonite, ALA, chlorella, etc) you may not be as >>> concerned about heavy metals. >>> Reagent grade is a higher purity than technical grade. From thr >> >> Sci-Tech >>> >>> Encyclopedia: >>> >>> "Commercial chemicals are available at several levels of purity. >>> Chemicals labeled "technical" or "commercial" are usually quite >> >> impure. >>> >>> The grade "USP" indicates only that the chemical meets the >> >> requirements >>> >>> of the United States Pharmacopeia. The term "CP" means only that the >>> chemical is purer than "technical." Chemicals designated "reagent >> >> grade" >>> >>> or "analyzed reagent" are specially purified materials which usually >>> have been analyzed to establish the levels of impurities. The American >>> Chemical Society has established specifications and tests for purity >> >> for >>> >>> some chemicals. Materials which meet these specifications are labeled >>> "Meets ACS Specifications." >>> >>> I do use some technical grade chemicals where it is not possible or it >>> is difficult to get reagent grade. And I do use chelators. When >> >> deciding >>> >>> to use a technical grade I try to get a copy of an assay. If no assay >>> is available and the amount used is low and the purity is reasonably >>> high I might still use it. There is no absolute answer to your >> >> question. >>> >>> - Steve N >>> >>> >>> -----Original Message----- >>> From: Annie B Smythe [mailto:[email protected]] Sent: Tuesday, >>> January 12, 2010 5:08 AM >>> To: CS List >>> Subject: CS>Chemistry question ? >>> >>> Question for chemistry knowing folks. >>> >>> What's the difference between technical grade and food grade? Is >>> technical grade the same as lab grade? And would technical grade magnesium >>> chloride powder to be unsafe to make a solution from for a person to drink >>> as magnesium supplementation? Any impurities or anything? >>> >>> >>> Annie >> >> >> >> -- >> The Silver List is a moderated forum for discussing Colloidal Silver. >> >> Instructions for unsubscribing are posted at: http://silverlist.org >> >> To post, address your message to: [email protected] >> >> Address Off-Topic messages to: [email protected] >> >> The Silver List and Off Topic List archives are currently down... >> >> List maintainer: Mike Devour <[email protected]> >> >> > >
