Sodium nitrite
CAS No.:7632-00-0 Molecular Formula: NaNO2 Purity:90%-99%
25mts Per 20FCL Density:2.17g/cm3 HS Code:31025000
Appearance:White Crystal Powder, White Crystal UN NO.:1500
Property: White or a little buff fine crystal. The relative molecular weight is 69.0 and density is 2.168. It's no smell and a little saline taste, easy to be deliquescence and to dissolve in water. The melting point is 271ºCand decomposition temperature is 320ºC. It has the strong oxidizing property, as well as reducing property. It can slowly oxidize into sodium nitrite in the air, and will become diamino compound composed with ammonia under low temperature.
Application: It is mainly used as the raw material of productions of nitro compound and azo dyes etc. It is also used as mordant and bleacher for fabric dyeing, as well as metal heat treatment agent, early-strength admixture and antifreeze of cement.
Molecular Formula: NaNO2
Property: White or a little buff fine crystal. The relative molecular weight is 69.0 and density is 2.168. It's no smell and a
little saline taste, easy to be deliquescence and to dissolve in water. The melting point is 271ºCand decomposition temperature is 320ºC. It has the strong oxidizing property, as well as reducing property. It can slowly oxidize into sodium nitrite in
the air, and will become diamino compound composed with ammonia under low temperature.
Application: It is mainly used as the raw material of productions of nitro compound and azo dyes etc. It is also used as
mordant and bleacher for fabric dyeing, as well as metal heat treatment agent,
early-strength admixture and antifreeze of cement.
Specification:
|
Item |
Quality Index |
|
High-Class |
First-Class |
Qualified-Class |
|
Purity |
99.0% min |
98.5% min |
98.0% min |
|
Moisture |
1.4% max |
2.0% max |
2.5% max |
|
Chlorides (As NaCL) |
0.10% max |
0.15% max |
---- |
|
Sodium nitrate |
0.8% max |
1.0% max |
1.5% max |
|
Water insolubles |
0.05% max |
0.06% max |
0.10% max |
Notice:
(1)This product shall be stored in the place where keep ventilation and dry against rain, heated and insolation under sunlight.
(2)This product shall not be delivered or stored together with strong reducing agent, inflammable and detonatable
substances, foods, feed, and additives.
(3)This product is venomousness. Please keep it safely. Don't eat it mistakenly.
1. Mordant: Sodium nitrite finds application as a mordant in the textile industry. It is used to enhance the dye absorption capacity of fabrics, ensuring better color fastness and improved dyeing results. By forming a complex with the dye molecules, sodium nitrite aids in achieving vibrant and long-lasting colors in textiles.
2. Bleaching agent: In various industrial processes, sodium nitrite acts as a bleaching agent. It is commonly employed in the production of paper and pulp, where it helps to remove impurities and brighten the final product. Additionally, sodium nitrite serves as a bleaching agent in the manufacturing of certain food products, such as cured meats, by preventing the growth of harmful bacteria.
3. Heat treatment agent: Sodium nitrite is extensively used as a heat treatment agent in metalworking industries. It plays a crucial role in the nitriding process, where it reacts with the surface of metals to form a hard nitride layer. This treatment enhances the durability, wear resistance, and corrosion resistance of metal components, making them suitable for various applications, including automotive and machinery parts.
4. Inhibitor: Sodium nitrite acts as an inhibitor in certain chemical reactions. It is particularly effective in preventing the corrosion of metals, such as steel, by forming a protective oxide layer on their surfaces. This property makes it valuable in industries where metal equipment and infrastructure are exposed to corrosive environments, such as oil refineries and chemical plants.
5. Reagent: Sodium nitrite serves as a reagent in various chemical reactions. For instance, it is utilized in the production of pharmaceuticals, dyes, and other organic compounds. Its ability to undergo reactions, such as diazotization, makes it a versatile and essential component in many synthesis processes.
6. Vasodilator: Sodium nitrite acts as a vasodilator, meaning it widens blood vessels, promoting improved blood flow. This property has medical applications, primarily in the treatment of certain cardiovascular conditions. Sodium nitrite can be administered under medical supervision to alleviate symptoms associated with conditions like angina and heart failure.
7. Material of chemicals: Sodium nitrite is widely used as a raw material in the production of various chemicals. It serves as a precursor in the synthesis of compounds like nitrosoamines, which find applications in the rubber and pharmaceutical industries. Furthermore, sodium nitrite is utilized in the manufacturing of corrosion inhibitors, antifreeze agents, and other specialty chemicals.
In summary, sodium nitrite is a versatile product with multiple application scenarios. Its functions as a mordant, bleaching agent, heat treatment agent, inhibitor, reagent, vasodilator, and material of chemicals make it indispensable in industries ranging from textiles and metalworking to pharmaceuticals and specialty chemicals.
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