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Sulfates and sulfur salts

Dithionate

Also known as dithionate(2-), Dithionic acid, ion(2-), Dithionate (S2O62-)

CAS 14781-81-8Formula O6S2-2Molar mass 160.13 g/mol
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Dithionate chemical structure, O6S2-2, CAS 14781-81-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
14781-81-8
Formula
O6S2-2
Molar mass
160.13 g/mol
HS code
285390
Category
Sulfates and sulfur salts

What is Dithionate?

Plain description, key identifiers and synonyms

Dithionate(2-) is a sulfur oxoanion and a sulfur oxide. It is a conjugate base of a dithionate(1-).

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
14781-81-8 CAS number cross-checked
Molecular formula
O6S2-2
InChIKey
RMGVZKRVHHSUIM-UHFFFAOYSA-L
InChI
InChI=1S/H2O6S2/c1-7(2,3)8(4,5)6/h(H,1,2,3)(H,4,5,6)/p-2
SMILES (canonical and isomeric)
[O-]S(=O)(=O)S(=O)(=O)[O-]

Synonyms

  • dithionate(2-)
  • Dithionic acid, ion(2-)
  • Dithionate (S2O62-)
  • bis(trioxidosulfate)(S--S)(2-)
  • [O3SSO3](2-)
  • [S2O6](2-)
  • 2,2,3,3-tetraoxido-1,4-dioxy-2,3-disulfy-[4]catenate(2-)
  • (O3SSO3)(2-)
  • (S2O6)(2-)
  • 2,2,3,3-tetraoxido-1,4-dioxy-2,3-disulfy-(4)catenate(2-)
  • metabisulphate

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
160.13 g/molcalc.
Exact mass
159.9147 Dacalc.
LogP (octanol/water)
-2.01calc.
Topological polar surface area
114.4 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
1calc.
Heavy atoms
8calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-2calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Dithionate suppliers

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Dithionate price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dithionate is traded under.

HS 2853.90Indicative HS code

Phosphides, whether or not chemically defined, excluding ferrophosphorus, other, other

World exports in 2024
$2.45B
−33.6% vs 2023, imports $816M
2019 to 2024
Top exporters
  1. China68.4%
  2. Israel8.1%
  3. United States4.9%
Top importers
  1. United States19.3%
  2. Japan17.9%
  3. China13.4%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Dithionate is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dithionate, based on the data on this page

What is Dithionate?

Dithionate(2-) is a sulfur oxoanion and a sulfur oxide. It is a conjugate base of a dithionate(1-).

What is the CAS number of Dithionate?

The CAS registry number of Dithionate is 14781-81-8.

What is the molecular formula and weight of Dithionate?

The molecular formula of Dithionate is O6S2-2 and its molar mass is 160.13 g/mol.

Is Dithionate hazardous?

No GHS hazard classification for Dithionate is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Dithionate?

Dithionate is usually classified under HS code 285390 (Phosphides, whether or not chemically defined, excluding ferrophosphorus, other…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dithionate?

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What is the price of Dithionate?

Suppliers quote Dithionate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dithionate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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