Got my SN at last. Have a few questions

[ringo99]

I finally managed to get the SN today. Had to go through 16 websites before I found one that wouldn't put up too many roadblocks. Regulations are tightening in my country and its sale is being restricted more than ever. My project is ending next year and most likely I'll be laid off. That's when I plan to do it. Hopefully my insurance will have enough to provide for my family too by then. I have some questions:


1) The label on the side says:

Laboratory Reagent
Assay: 96% min
Sulphate (SO4): 0.03% max
Chloride (Cl) : 0.02% max
Iron (Fe): 0.002% max
Lead (Pb): 0.001% max
10% Aq solution: Clear

Is this enough to ctb? Should I make any adjustments to the final mixture or is the one mentioned in Stan's guide enough?


2) Assuming that the answer to 1) is yes, the mfg date is Feb 2023. Will it stay effective until June 2024? How should I store it so it stays potent? The weather in city I stay in is mostly hot (avg 94 °F) all year around

 

[Vizzy]

I finally managed to get the SN today. Had to go through 16 websites before I found one that wouldn't put up too many roadblocks. Regulations are tightening in my country and its sale is being restricted more than ever. My project is ending next year and most likely I'll be laid off. That's when I plan to do it. Hopefully my insurance will have enough to provide for my family too by then. I have some questions:


1) The label on the side says:

Laboratory Reagent
Assay: 96% min
Sulphate (SO4): 0.03% max
Chloride (Cl) : 0.02% max
Iron (Fe): 0.002% max
Lead (Pb): 0.001% max
10% Aq solution: Clear

Is this enough to ctb? Should I make any adjustments to the final mixture or is the one mentioned in Stan's guide enough?


2) Assuming that the answer to 1) is yes, the mfg date is Feb 2023. Will it stay effective until June 2024? How should I store it so it stays potent? The weather in city I stay in is mostly hot (avg 94 °F) all year around

Sn purity more than 95 percent is optimal for ctb

 

[JeanLucPicard]

As I understand it, the manufacturing date has little to do with actual expiry. If it's stored closed, even in the heat, it should be good for years. You'd have to leave it open and exposed to heat to make it go bad. It isn't as sensitive as it's sometimes made out to be.

 

[Vizzy]

As I understand it, the manufacturing date has little to do with actual expiry. If it's stored closed, even in the heat, it should be good for years. You'd have to leave it open and exposed to heat to make it go bad. It isn't as sensitive as it's sometimes made out to be.

I see two types of sodium nitrite, one is just sodium nitrite (not food grade), another sodium nitrite (Prague powder can be used for curing meat ), which one to buy?

 

[Slipkorn]

Reagents don't expire if they haven't reacted with anything. Most expiration dates are arbitrary, some are with estimation of permeability of the container.

 

[JeanLucPicard]

I see two types of sodium nitrite, one is just sodium nitrite (not food grade), another sodium nitrite (Prague powder can be used for curing meat ), which one to buy?

It needs to be in excess of 95% pure. Prague powder is, I think, 6%?

 

[Vizzy]

It needs to be in excess of 95% pure. Prague powder is, I think, 6%?

They say sodium nitrite (Prague powder) so it is not suitable for ctb?

 

[JeanLucPicard]

They say sodium nitrite (Prague powder) so it is not suitable for ctb?

No. You don't want Prague powder.

 

[Vizzy]

No. You don't want Prague powder.

Okay thank you so food grade sn not good for ctb ?

 

[Not.Flugel]

Okay thank you so food grade sn not good for ctb ?

You are confusing the two. Prague powder is not a food grade NaNo2. It contains only 6.25% NaNo2 not nearly enough, the rest is either NaCl or a small amount of NaNo3.
The other is the grading system for chemicals:

1. ACS grade meets or exceeds purity standards set by the American Chemical Society (ACS). This grade is acceptable for food, drug, or medicinal use and can be used for ACS applications or for general procedures that require stringent quality specifications and a purity of ≥95%.
   
   
2. Reagent grade is generally equal to ACS grade (≥95%) and is acceptable for food, drug, or medicinal use and is suitable for use in many laboratory and analytical applications.
   
   
3. USP grade meets or exceeds requirements of the United States Pharmacopeia (USP). This grade is acceptable for food, drug, or medicinal use. It is also used for most laboratory purposes, but the USP being followed should always be reviewed prior to beginning to ensure the grade is appropriate for that methodology.
   
   
4. NF grade meets or exceeds requirements of the National Formulary (NF). The USP and the NF (USP– NF) jointly publish a book of public pharmacopeial standards for chemical and biological drug substances, dosage forms, compounded preparations, excipients, medical devices, and dietary supplements. The listings here should be reviewed to determine which would be considered equivalent grades.
   
   
5. Laboratory grade is the most popular grade for use in educational applications, but its exact levels of impurities are unknown. While excellent for teaching and training, it is not pure enough to be offered for food, drug, or medicinal use of any kind.
   
   
6. Purified grade, also called pure or practical grade, meets no official standard; it is not pure enough to be offered for food, drug, or medicinal use of any kind.
   
   
7. Technical grade is used for commercial and industrial purposes; however, like many others, it is not pure enough to be offered for food, drug, or medicinal use of any kind.

 

[Vizzy]

You are confusing the two. Prague powder is not a food grade NaNo2. It contains only 6.25% NaNo2 not nearly enough, the rest is either NaCl or a small amount of NaNo3.
The other is the grading system for chemicals:

1. ACS grade meets or exceeds purity standards set by the American Chemical Society (ACS). This grade is acceptable for food, drug, or medicinal use and can be used for ACS applications or for general procedures that require stringent quality specifications and a purity of ≥95%.
   
   
2. Reagent grade is generally equal to ACS grade (≥95%) and is acceptable for food, drug, or medicinal use and is suitable for use in many laboratory and analytical applications.
   
   
3. USP grade meets or exceeds requirements of the United States Pharmacopeia (USP). This grade is acceptable for food, drug, or medicinal use. It is also used for most laboratory purposes, but the USP being followed should always be reviewed prior to beginning to ensure the grade is appropriate for that methodology.
   
   
4. NF grade meets or exceeds requirements of the National Formulary (NF). The USP and the NF (USP– NF) jointly publish a book of public pharmacopeial standards for chemical and biological drug substances, dosage forms, compounded preparations, excipients, medical devices, and dietary supplements. The listings here should be reviewed to determine which would be considered equivalent grades.
   
   
5. Laboratory grade is the most popular grade for use in educational applications, but its exact levels of impurities are unknown. While excellent for teaching and training, it is not pure enough to be offered for food, drug, or medicinal use of any kind.
   
   
6. Purified grade, also called pure or practical grade, meets no official standard; it is not pure enough to be offered for food, drug, or medicinal use of any kind.
   
   
7. Technical grade is used for commercial and industrial purposes; however, like many others, it is not pure enough to be offered for food, drug, or medicinal use of any kind.

Seller has two products,

first product is an inorganic compound. which looks like a slightly yellowish white crystalline powder good water soluble Used as an ingredient in insecticides. Including use as part Engaged in the paint industry Sodium nitrite (generic name) has trade names such as Cyanide Antidote Kit, Nithiodote. Sodium nitrite (sodium nitrite) white or slightly yellowish granules, sodium nitrite can be used in a variety of applications. As a corrosion inhibitor in the construction industry or used as a carrier Heat in a closed system cooling system Used as a compound fertilizer for plants and flowers, foliage spray fertilizer. It is a material for making gunpowder and firecrackers, etc.

Second product

SALT WITH SODIUM NITRITE(FOOD ADDITIVE) For making meatballs, making pork sausage, Chinese sausages, sour pork, marinated pork, sausages, Isaan sausages Help make pork It has a beautiful pinkish red color. It is necessary to add this nitrate and nitrate compound. This group of substances can inhibit the growth of bacteria. It is a white powder, odorless, soluble in water. as food additives (food additives) group that acts as as a preservative The addition of nitrites and nitrates to food for food preservation. Not consumed directly for food. or as the main ingredient of food purpose for food preservation Enter Store > G Used to add to cured meat products, hams, etc.

Which to choose ?

 

[Not.Flugel]

Seller has two products,

first product is an inorganic compound. which looks like a slightly yellowish white crystalline powder good water soluble Used as an ingredient in insecticides. Including use as part Engaged in the paint industry Sodium nitrite (generic name) has trade names such as Cyanide Antidote Kit, Nithiodote. Sodium nitrite (sodium nitrite) white or slightly yellowish granules, sodium nitrite can be used in a variety of applications. As a corrosion inhibitor in the construction industry or used as a carrier Heat in a closed system cooling system Used as a compound fertilizer for plants and flowers, foliage spray fertilizer. It is a material for making gunpowder and firecrackers, etc.

Second product

SALT WITH SODIUM NITRITE(FOOD ADDITIVE) For making meatballs, making pork sausage, Chinese sausages, sour pork, marinated pork, sausages, Isaan sausages Help make pork It has a beautiful pinkish red color. It is necessary to add this nitrate and nitrate compound. This group of substances can inhibit the growth of bacteria. It is a white powder, odorless, soluble in water. as food additives (food additives) group that acts as as a preservative The addition of nitrites and nitrates to food for food preservation. Not consumed directly for food. or as the main ingredient of food purpose for food preservation Enter Store > G Used to add to cured meat products, hams, etc.

Which to choose ?

Absolutely not the second one, the second one will not have enough at all. You are looking for pure NaNO2 not Salt with a bit of Sodium nitrite. Unless you want the worst night of your life. Also, an observation is the last and least effective way to determine a chemical component. Our NaNO2 in lab is white and crystalline. Also, you don't want NO3-.
If possible find out the purity of the first component don't buy the second.