1.06528
Sodium disulfite
(sodium metabisulfite) for analysis EMSURE® ACS,Reag. Ph Eur
Synonym(s):
Sodium disulfite, Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite
About This Item
Recommended Products
grade
ACS reagent
Quality Level
agency
reag. Ph. Eur.
product line
EMSURE®
assay
98.0-100.5% (iodometric)
form
powder
potency
1540 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rat)
impurities
≤0.005% Insoluble matter
pH
3.5-5 (20 °C, 50 g/L in H2O)
mp
150 °C (decomposition)
solubility
650 g/L
density
2.36 g/cm3 at 20 °C
bulk density
1000‑1200 kg/m3
anion traces
chloride (Cl-): ≤0.005%
thiosulfate (S2O32-): ≤0.05%passes test
cation traces
As: ≤0.0001%
Fe: ≤0.0005%
heavy metals (as Pb): ≤0.001%
storage temp.
2-30°C
InChI
1S/2Na.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
InChI key
LDTLADDKFLAYJA-UHFFFAOYSA-L
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Analysis Note
Identity: passes test
Appearance of solution: passes test
pH-value (5 %; water): 3.5 - 5.0
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.005 %
Thiosulfate (S₂O₃):
≤ 0.05 %
: passes test
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0001 %
Fe (Iron): ≤ 0.0005 %
Legal Information
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1
supp_hazards
Storage Class
13 - Non Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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