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Inorganic acids

Phosphorodithioic acid

Also known as Dithiophosphoric acid, dihydroxy-sulfanyl-sulfanylidene-lambda5-phosphane, Dithiophosphorsaure

CAS 15834-33-0Formula H3O2PS2Molar mass 130.13 g/mol
1 supplier listed
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Phosphorodithioic acid chemical structure, H3O2PS2, CAS 15834-33-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
15834-33-0
Formula
H3O2PS2
Physical form
Liquid
HS code
281119
Category
Inorganic acids
UN number
UN 1993
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Phosphorodithioic acid?

Plain description, key identifiers and synonyms

Dithiophosphoric acid is a phosphorothioic acid that is the phosphoric acid having two of its oxygen atoms replaced by sulfur atoms. It is a conjugate acid of a dithiophosphate(2-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dihydroxy-sulfanyl-sulfanylidene-λ5-phosphane
CAS number
15834-33-0 CAS number cross-checked
Molecular formula
H3O2PS2
UNII
8056RR93HU
InChIKey
NAGJZTKCGNOGPW-UHFFFAOYSA-N
InChI
InChI=1S/H3O2PS2/c1-3(2,4)5/h(H3,1,2,4,5)
SMILES (canonical and isomeric)
OP(=S)(O)S

Synonyms

  • Dithiophosphoric acid
  • dihydroxy-sulfanyl-sulfanylidene-lambda5-phosphane
  • Dithiophosphorsaure
  • dithioorthophosphoric acid
  • phosphorodithioic O,O,S-acid
  • Phosphorodithioic O,S,S-acid
  • HSP(S)(OH)2
  • Thiolothionophosphoric acid
  • Dioxido-sulfanylidene-sulfido-lambda5-phosphane, hydron

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

Physical form
Liquidexp.

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
130.13 g/molcalc.
Exact mass
129.9312 Dacalc.
LogP (octanol/water)
0.13calc.
Topological polar surface area
40.46 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
UN number
UN 1993

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

Full safety data and first aid

Phosphorodithioic acid suppliers

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Where suppliers are based

1 supplier in 1 country

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Phosphorodithioic acid 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 Phosphorodithioic acid is traded under.

HS 2811.19Indicative HS code

Inorganic acids, other than hydrogen fluoride

World exports in 2024
$494M
+6.5% vs 2023, imports $458M
2019 to 2024
Top exporters
  1. China24.9%
  2. Israel16.0%
  3. Jordan * partner reported11.7%
Top importers
  1. China29.3%
  2. United States16.2%
  3. Germany7.0%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Phosphorodithioic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Phosphorodithioic acid, based on the data on this page

What is Phosphorodithioic acid?

Dithiophosphoric acid is a phosphorothioic acid that is the phosphoric acid having two of its oxygen atoms replaced by sulfur atoms. It is a conjugate acid of a dithiophosphate(2-).

What is the CAS number of Phosphorodithioic acid?

The CAS registry number of Phosphorodithioic acid is 15834-33-0.

What is the molecular formula and weight of Phosphorodithioic acid?

The molecular formula of Phosphorodithioic acid is H3O2PS2 and its molar mass is 130.13 g/mol.

Is Phosphorodithioic acid hazardous?

No GHS hazard classification for Phosphorodithioic acid 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 Phosphorodithioic acid?

Phosphorodithioic acid is usually classified under HS code 281119 (II. INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Phosphorodithioic acid?

CompoundList lists 1 supplier of Phosphorodithioic acid in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Phosphorodithioic acid?

Suppliers quote Phosphorodithioic acid 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 Phosphorodithioic acid

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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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