Sodium nitrite: Difference between revisions
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(Created page with "{{Compound|chemf=NaNO2 |mm=68.9953|density=2.168|mp=271|bp=320 (decomp)|sol_aq=848 |stp_p=solid|stp_q=yellowish white }} ==Uses== ===Other=== Precursor for amyl nitrite and nitrous acid ==Natural occurrence== ==Hazards== ==Character== ==Production== ===Extraction=== ===Synthesis=== ====via carbon==== # Melt sodium nitrate # Add carbon to the melt #:{{#Chem: 2NaNO3 + C = 2NaNO2 + CO2//reactants burn}} ====via sulfite==== ===== direct===== # Combine sodiu...") |
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==Uses== | ==Uses== | ||
===Other=== | ===Other=== | ||
Precursor for | Precursor for [[nitrous acid]] | ||
==Natural occurrence== | ==Natural occurrence== | ||
==Hazards== | ==Hazards== | ||
| Line 15: | Line 16: | ||
# Melt [[sodium nitrate]] | # Melt [[sodium nitrate]] | ||
# Add [[carbon]] to the melt | # Add [[carbon]] to the melt | ||
#:{{#Chem: 2NaNO3 + C = 2NaNO2 + CO2//reactants burn}} | #:{{#Chem: 2NaNO3(l) + C(s) = 2NaNO2(l) + CO2(g)//reactants burn}} | ||
====via sulfite==== | ====via sulfite==== | ||
===== direct===== | ===== direct===== | ||
Latest revision as of 21:23, 3 December 2024
| Chemical formula | NaNO2 |
|---|---|
| OTP appearance | yellowish white solid |
| Molar Mass(g/mol) | 68.9953 |
| Density(g/cc) | 2.168 |
| Melting Point(°C) | 271 |
| Boiling Point(°C) | 320 (decomp) |
| Solubility in water(g/L) | 848 |
| NFPA 704 |  0
0
0
|
Uses
Other
Precursor for nitrous acid
Natural occurrence
Hazards
Character
Production
Extraction
Synthesis
via carbon
- Melt sodium nitrate
- Add carbon to the melt
- 2 NaNO3(l) + C(s) → 2 NaNO2(l) + CO2(g) // reactants burn
via sulfite
direct
- Combine sodium bisulfite and sodium nitrate giving sodium nitrite and sodium bisulfate
- NaNO3 + NaHSO3 → NaNO2 + NaHSO4
in situ
- Melt sodium nitrate and sodium hydroxide.
- Add sulfur to the melt giving sodium nitrite and sodium sulfate
- [[3chem
- 3NaNO3 + 2NaOH + S = 3 NaNO2 + NaSO4 + 2H2O}}