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Merck

31454

亚硫酸钠

puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)

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線性公式:
Na2SO3
CAS 編號:
7757-83-7
分子量：:
126.04
NACRES:
NA.21
PubChem Substance ID:
329753771
UNSPSC Code:
12352302
EC Number:
231-821-4
MDL number:
MFCD00003503
Assay:
98-100.0% (iodometric)
Form:
solid

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產品名稱

亚硫酸钠, puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)

InChI key

GEHJYWRUCIMESM-UHFFFAOYSA-L

InChI

1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

SMILES string

[Na+].[Na+].[O-]S([O-])=O

agency

USP/NF
reag. Ph. Eur.

grade

puriss. p.a.

assay

98-100.0% (iodometric)

form

solid

impurities

≤0.001% heavy metals (as Pb)
≤0.02% thiosulfate (S2O3)

pH

9.0-10.5 (25 °C, 126 g/L)

anion traces

chloride (Cl-): ≤50 mg/kg

cation traces

As: ≤0.2 mg/kg
Ca: ≤50 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Pb: ≤5 mg/kg
Se: ≤10 mg/kg
Zn: ≤10 mg/kg

Quality Level

100

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本產品
23932113471S0505
亚硫酸钠 puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)

Sigma-Aldrich

31454

亚硫酸钠

亚硫酸钠 ACS reagent, ≥98.0%

Sigma-Aldrich

239321

亚硫酸钠

亚硫酸钠 puriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)

Sigma-Aldrich

13471

亚硫酸钠

亚硫酸钠 ≥98%

Sigma-Aldrich

S0505

亚硫酸钠

form

solid

form

powder or crystals

form

solid

form

powder or crystals

assay

98-100.0% (iodometric)

assay

≥98.0%

assay

95.0-100.0% (iodometric)

assay

≥98%

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

grade

puriss. p.a.

grade

-

grade

puriss.

grade

-

impurities

≤0.001% heavy metals (as Pb), ≤0.02% thiosulfate (S2O3)

impurities

Free acid, passes test, ≤0.005% insolubles, ≤0.03 meq/g Titr. free base

impurities

residual solvents, complies, ≤0.001% heavy metals (as Pb), ≤0.05% thiosulfate (S2O3)

impurities

-

anion traces

chloride (Cl-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤0.02%

anion traces

chloride (Cl-): ≤200 mg/kg

anion traces

-

Application

亚硫酸钠被用于制备基于小麦面筋的薄膜。[1]

General description

亚硫酸钠是一种无机钠盐。已经提出了快速混合方法来研究氧与亚硫酸钠之间反应的动力学。[2]

supp_hazards

EUH031

存儲類別/等級

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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分析證明 (COA)

Lot/Batch Number
MKCV9233
MKCW8521
0000246227
0000246227
MKCR2699

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Reaction kinetics of sodium sulfite oxidation by the rapid-mixing method.
Barron CH and O'Hern HA.
Chemical Engineering Science, 21(5), 397-404 (1966)
New plasticizers for wheat gluten films.
Irissin-Mangata J, et al.
European Polymer Journal, 37(8), 1533-1541 (2001)
Qiang Yang et al.
Bioresource technology, 126, 336-340 (2012-11-06)
Agave americana is one of commonly grown agave species but currently less valuable because its large flower stalk cannot be used for producing alcoholic beverage. In the present study, the stalk was pretreated with dilute acid (DA), sulfite (SPORL), and
Michelle Cilia et al.
PloS one, 7(10), e48177-e48177 (2012-11-03)
Circulative transmission of viruses in the Luteoviridae, such as cereal yellow dwarf virus (CYDV), requires a series of precisely orchestrated interactions between virus, plant, and aphid proteins. Natural selection has favored these viruses to be retained in the phloem to
Amber R Boles et al.
Biotechnology and bioengineering, 109(3), 637-646 (2011-10-22)
A novel sulfur-utilizing perchlorate reducing bacterial consortium successfully treated perchlorate (ClO₄⁻) in prior batch and bench-scale packed bed reactor (PBR) studies. This study examined the scale up of this process for treatment of water from a ClO ₄⁻ and RDX contaminated
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