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Sodium nitrite formula is [NaNO2] and is an inorganic compound. It is a white to yellowish crystalline powder that is soluble in water. It is the most essential use of powder for making foods. Sodium nitrite is a salt and is used for curing meats like hot dogs, ham, or bacon. It is safe to use in everything. But sometimes excessive use of sodium nitrite can damage your blood vessels, making your arteries more likely to harden and increasing heart disease. It is soluble in water or Ethanol. Sodium nitrite is used in foods and coloring the foods and preservatives It gives the pink or red color to the foods.
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Key takeaways: sodium nitrite, alkali metal, sodium nitrite formula, inorganic nitrate salt, industrial chemistry
What is Sodium Nitrite?
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Sodium nitrite is an inorganic nitrate salt of an alkali metal with the chemical formula NaNO2. It can be soluble in water or ethanol. It is used for curing meat like hot dogs, ham, or bacon. Extreme use of sodium nitrite can cause heart disease. It is in white or slightly yellowish color. It mainly excludes oxidation reactions. Sodium nitrite has some side effects also like blurred vision, coma, confusion, and more.
Sodium Nitrite Properties
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| Name | Sodium Nitrite |
| Formula | NaNO2 |
| Colour | Pure white |
| Density | 2.17 g/ |
| Boiling point | above 320 °C |
| Melting point | 271 °C |
| soluble | Water or ethanol |
| Molar mass | 68.9953 g/mol |
| ph | 9 |
Prominent Reactions
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- When we heat sodium nitrite with ammonium chloride then it forms into sodium chloride or ammonium nitrate. it decomposed into nitrogen and water
NH4CL+ NaNO2 = NH4NO2 + NaCl
NH4NO2 = N2 2H2O
- Sodium nitrite reacts with concentrated hydrochloride acid under boiling conditions to produce sodium nitrite, sodium chloride, nitric oxide, and water.
3NaNO2 + 2HCl = NaNO3 + 2NaCl + 2NO + H2O
- When sodium nitrite reacts with sulfuric acid to turn into sodium sulfate, nitrogen dioxide, nitrite acid, and water.
2NaNO2 + H2SO4 = Na2SO4 + NO2 + NO + H2O
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| Topics Related Links | ||
|---|---|---|
| S - block elements | Bicarbonates | Carbonates |
Sodium Nitrite Uses
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- Industrial chemistry
The main use of sodium nitrite is for the industrial production of organonitrogen compounds. It is good for the conversion of amines into diazo compounds, which are key precursors to many dyes. In rubber industries also it is used. It is also used in metallurgical applications.
- Food additives and preservatives
Sodium nitrite is used to cure the meat. Nitrite reacts with the meat's myoglobin to cause a color change. Historically, salt has been used for the preservation of meat. The salt preserved meat product was brownish and gray. When sodium nitrite is added to the salt the meat develops into a red color which is called cured meats like ham, bacon, hot dogs, and bologna.
- Color and tastes
The color and taste of meat are the most important components of consumer acceptance sodium nitrite is responsible for the desirable red color [ or shaded pink]
Of meat. very little nitrite is needed to change the color.
- Inhibition of microbial growth
Sodium nitrite has shown varying degrees of effectiveness for controlling the growth of other spoilage or disease-causing microorganisms. In some countries cured meat has been produced without nitrite sodium nitrite is also able to effectively delay the development of oxidative rancidity.
Causes of Sodium Nitrite
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The cause that can side effects on the body is -
- Blurred vision
- Coma
- Confusion
- hyPotension
- Dizziness
- Dysrhythmia
- Headache
- Methemoglobinemia
- Palpitations
- Seizures
- Syncope
- Tachycardia
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Sodium Nitrate Structure
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NaNO3 compound name is Sodium nitrate. Sodium nitrate structure includes an ionic bond between 1 Na+ ion and one NO3- ion. The structure looks as follows.
Sodium Nitrate Structure
It is sodium salt of nitric acid (HNO3) therefore the nitrate ion contains the central nitrogen atom making bonding with three oxygen atoms via two single bonds and one single bond that are in resonance with each other.
Things to Remember
- Sodium nitrite is used for coloring and preserving foods
- It works as an antimicrobial in meat and fish and some cheese.
- In high amounts, it can be toxic for humans causing methemoglobinemia.
- It is in white or slightly yellowish color. It mainly excludes oxidation reactions
Sample Questions
Ques: What are the properties of sodium nitrite? (2 marks)
Ans: Sodium nitrite is an inorganic salt with the chemical formula NaNO2 ., The melting point of sodium nitrite is 271 °C and the boiling point of sodium nitrite is above 320 °C
The density of sodium nitrite is 2.17 g/cmThe ph level of sodium nitrite is 9.
Ques: What are the uses of sodium nitrite. (2 marks)
Ans: sodium nitrite in heat transfer salts, metal treatment, and its added
color on foods or preservatives for meats and fish. in pharmaceuticals, and as an antidote for cyanide poisoning.
Ques: What is the color of sodium nitrite and where is it found? (3 marks)
Ans: Sodium nitrite is added to meats bacon, sausage, ham, and smoked fish. The FDA has established guidelines about the limitation of using nitrite in foods. Many food companies are using this sodium nitrite because it is also dangerous to the human body and can cause lots of diseases. Sodium nitrite comes from tubers and green vegetables and our saliva. Vegetables contain sodium nitrite and when mixed with our saliva it is converted into sodium nitrite. sodium nitrite can be soluble in water or ethanol
Ques: What is sodium nitrite color? (1 mark)
Ans: The color of sodium nitrite is white or slightly yellow; it's added to foods and preservatives. Sodium nitrite is neither acid nor base
Ques: What are the side effects of sodium nitrite? (4 marks)
Ans: Sodium nitrite Side effects are as follows -:
- Blurred vision
- Coma
- Confusion
- hyPotension
- Dizziness
- Dysrhythmia
- Headache
- Methemoglobinemia
- Palpitations
- Seizures
- Syncope
- Tachycardia
Ques: Can we Use sodium nitrite instead of sodium nitrate? (2 marks)
Ans: No we cannot use sodium nitrite is a grain of salt and antioxidant that is commonly used to cure ham and bacon and the sodium nitrate is the salt that is used in jerky, bacon, and luncheon meats both chemicals acts as food preservatives and add red or pink color in meats among other uses.
Ques: Is sodium nitrite or sodium nitrate the same? (2 marks)
Ans: sodium Nitrite and sodium nitrate both are different from each other and are different types of compounds. Nitrite [NO2] contains one nitrogen and two oxygens and sodium nitrate contains [NO3] consists of one nitrogen atom and three oxygen atoms. Sodium nitrates are relatively inserted which means they are stable and unlikely to change and causes .athe are opposite from each other.
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