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11229

Sigma-Aldrich

Ammonium sulfite solution

technical, 34%

Synonym(s):

Diammonium sulfite, Diammonium sulfonate

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About This Item

Linear Formula:
(NH4)2SO3
CAS Number:
Molecular Weight:
116.14
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.22

grade

technical

Quality Level

concentration

34%
~34% in H2O

SMILES string

N.N.OS(O)=O

InChI

1S/2H3N.H2O3S/c;;1-4(2)3/h2*1H3;(H2,1,2,3)

InChI key

PQUCIEFHOVEZAU-UHFFFAOYSA-N

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General description

Ammonium sulfite is an ammonium salt of sulfurous acid and a byproduct of the flue gas desulfuration process by ammonia. Ammonium sulfite can be oxidized into ammonium sulfate, which can be used as a fertilizer.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Supplementary Hazards

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Hikoya Hayatsu et al.
Nucleic acids symposium series (2004), (53)(53), 217-218 (2009-09-15)
Bisulfite modification is a principal tool for analyzing DNA methylation, the methyl substitution at position 5 of cytosine residues. Hypermethylation is known to cause silencing of genes, which may result in cell function failures. DNA methylation analysis is therefore a
Oxidation of ammonium sulfite in aqueous solutions using ozone technology
Li Y, et al.
Journal of Physics. Conference Series, 418(1), 012130-012130 (2013)
Generation, behavior, and toxicity of ammonium sulfite aerosols.
S J Rothenberg et al.
Journal of the Air Pollution Control Association, 36(1), 55-59 (1986-01-01)
J Sun et al.
Huan jing ke xue= Huanjing kexue, 22(4), 117-119 (2001-09-25)
The experiment results showed that the best technology of removing the nitrogen was anoxic time to aerobic time of 1:1.5, a cycle of 8 hours; the SRT should be more than 12 d and the loading of NH3-N should be
Contact dermatitis due to ammonium bisulfite in a bleaching cream.
M Pambor
Contact dermatitis, 35(1), 48-49 (1996-07-01)

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