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31481

Sigma-Aldrich

Sodium sulfate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., anhydrous, ≥99.0%

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About This Item

Linear Formula:
Na2SO4
CAS Number:
7757-82-6
Molecular Weight:
142.04
EC Number:
231-820-9
MDL number:
MFCD00003504
UNSPSC Code:
12352302
PubChem Substance ID:
329753782
NACRES:
NA.22

grade

ACS reagent
puriss. p.a.

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

Assay

≥99.0%

form

crystalline

impurities

≤0.0005% heavy metals (by ICP-OES)
≤0.0005% total nitrogen (N)
≤0.01% in water insoluble matters
≤0.03% free alkali (as NaOH)
≤0.05% free acid (as H2SO4)

loss

≤0.5% loss on ignition, 800 °C

pH

5.2-8.0 (20 °C, 5%)

mp

884 °C (lit.)

density

2.68 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤10 mg/kg
phosphate (PO43-): ≤10 mg/kg

cation traces

As: ≤1 mg/kg
Ca: ≤20 mg/kg
Fe: ≤5 mg/kg
K: ≤100 mg/kg
Mg: ≤25 mg/kg

suitability

complies for appearance of solution

storage temp.

2-8°C

SMILES string

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

InChI

1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI key

PMZURENOXWZQFD-UHFFFAOYSA-L

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Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

31481-6X1KG-R:
31481-6X2.5KG-R:
31481-BULK-R:
31481-50KG-H:
31481-1KG-R:
31481-2.5KG-R:
31481-500G-R:
31481-5KG-R:
31481-50KG-R:
31481-VAR-R:
31481-6X500G-R:

Certificates of Analysis (COA)

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