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Sodium sulphite, 500 g

≥98 %, p.a., ACS, anhydrous
Pack Qty.
Pack.
Empirical formula Na2SO3
Molar mass (M) 126,04 g/mol
Density (D) 2,63 g/cm³
Melting point (mp) 500 °C
WGK 1
CAS No. [7757-83-7]
EG-Nr. 231-821-4

For removal of chlorine and dissolution of cellulose, reagent for detection of iodate in the presence of chlorate and bromate, for absorption of NOx in gas analysis.

Guarantee analysis

18,50 €/op. 

plus VAT | 500 g za op.

Nr kat. P033.1

Dostępny z magazynu w Karlsruhe
Szybka, prosta i niezawodna dostawa. (Ze względu na duży popyt, może wystąpić opóźnienie w wysyłce do 5 dni roboczych.)
od 6 op. 17,58 €/op.
od 24 op. 16,65 €/op.
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Sodium sulphite
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Nr kat. Pack Qty. Pack. Cena Ilość
P033.1 500 g plastic 18,50 €
P033.2 1 kg plastic 27,90 €
P033.3 2,5 kg plastic 49,90 €
Dostępny z magazynu w Karlsruhe
Data dostawy obecnie nieznana
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Informacje ogólne

Indicators and Dyes

Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications.

Salts for Analysis

Our salts for analysis are manufactured under strict production guidelines. Analytical purity and best quality reliably characterize each batch. Salts in p.a. quality made by Carl ROTH meet the high requirements for reproducible results. Most of our salts are additionally specified according to international standards like ACS and ISO.

Definition:

p.a.: pro analysi (for analysis)

ACS: American Chemical Society

ISO: International Standard Organisation

Determination of adsorbable organic halogen compounds (AOX)

AOX (adsorbable organic halogens, where X = Cl, Br, I) is a sum parameter that describes the amount of organic halogen compounds in substances such as water, soil and sewage sludge. This parameter is used primarily in waste water analysis. The method for calculating AOX levels is set out in DIN EN ISO 9562. The quantity of organically bound halogens in a water sample is measured using either the shaking method or the column method. In the shaking method, the AOX in a sample are bound to activated carbon by shaking. In the column method, the AOX in a sample are bound to activated carbon by the action of flushing the sample through a glass column filled with activated carbon. The quantity of activated carbon, which is defined precisely in each case, is then burned in an oxygen chamber and the hydrogen halide released is measured by means of argentometry. The amount of fluoroorganic compounds present cannot be measured argentometrically.

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Guarantee analysis

Assay (iodom.)≥98,0 %  
In H2O insoluble matter≤0,005 %  
Aciditycomplies  
Alkalinity≤0,03 meq/g  
Thiosulphatecomplies  
Chloride (Cl)≤0,01 %  
Arsenic (As)≤0,0001 %  
Lead (Pb)≤0,001 %  
Calcium (Ca)≤0,013 %  
Iron (Fe)≤0,001 %  
Potassium (K)≤0,05 %  
Copper (Cu)≤0,001 %  
Magnesium (Mg)≤0,013 %  
Nickel (Ni)≤0,001 %  
Heavy metals (as Pb)≤0,001 %  

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