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Carboxylic acids and anhydrides

Phthalate

Also known as Phthalic Acid Ester, benzene-1,2-dicarboxylate, phthalate(2-)

CAS 3198-29-6Formula C8H4O4-2Molar mass 164.12 g/mol
4 suppliers listed
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Phthalate chemical structure, C8H4O4-2, CAS 3198-29-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3198-29-6
Formula
C8H4O4-2
Molar mass
164.12 g/mol
HS code
291739
Category
Carboxylic acids and anhydrides

What is Phthalate?

Plain description, key identifiers and synonyms

Phthalate(2-) is a phthalate that is the dianion obtained by the deprotonation of both the carboxy groups of phthalic acid. It has a role as a human xenobiotic metabolite. It is a phthalate and a dicarboxylic acid dianion. It is a conjugate base of a phthalate(1-).

Phthalate is a dianion of phthalic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
phthalate
CAS number
3198-29-6 CAS number cross-checked
Molecular formula
C8H4O4-2
InChIKey
XNGIFLGASWRNHJ-UHFFFAOYSA-L
InChI
InChI=1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12)/p-2
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)C(=O)[O-])C(=O)[O-]

Synonyms

  • Phthalic Acid Ester
  • benzene-1,2-dicarboxylate
  • phthalate(2-)
  • z phthalate
  • 1,2-Phthalate
  • 3c2r
  • 1,2-benzenedicarboxylate
  • 1,2-Benzenecarboxylic acid

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
164.12 g/molcalc.
Exact mass
164.0121 Dacalc.
LogP (octanol/water)
-1.59calc.
Topological polar surface area
80.26 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
-2calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

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.

Phthalate suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 4 suppliers
4 of 4 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

4 suppliers in 4 countries

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Phthalate 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

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • human xenobiotic metabolite
  • mammalian metabolite
  • metabolite
  • xenobiotic metabolite

Functional uses

  • Plasticizer

Pharmacology

Phthalate is a family of benzene derivatives that are formed by esterification of phthalic acid. Phthalates are added to increase the flexibility and softness of commercial plastics, which are incorporated into a wide variety of consumer goods. Ingested phthalates may exhibit estrogenic or antiandrogenic effects or they may act as endocrine disruptors. Exposure to phthalate may increase the risk of certain cancers.

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 Phthalate is traded under.

HS 2917.39Indicative HS code

Aromatic polycarboxylic acids, not elsewhere classified in subheading 2917.3

World exports in 2024
$1.87B
+19.8% vs 2023, imports $2.65B
2019 to 2024
Top exporters
  1. China31.7%
  2. South Korea12.9%
  3. United States9.8%
Top importers
  1. Egypt12.7%
  2. United States12.5%
  3. China10.3%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Phthalate?

Phthalate(2-) is a phthalate that is the dianion obtained by the deprotonation of both the carboxy groups of phthalic acid. It has a role as a human xenobiotic metabolite. It is a phthalate and a dicarboxylic acid dianion. It is a conjugate base of a phthalate(1-).

What is the CAS number of Phthalate?

The CAS registry number of Phthalate is 3198-29-6.

What is the molecular formula and weight of Phthalate?

The molecular formula of Phthalate is C8H4O4-2 and its molar mass is 164.12 g/mol.

What is Phthalate used for?

Known uses and roles of Phthalate include building blocks in research and laboratory, screening compounds in research and laboratory, animal metabolite, eukaryotic metabolite, human metabolite and 5 more.

Is Phthalate hazardous?

No GHS hazard classification for Phthalate 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 Phthalate?

Phthalate is usually classified under HS code 291739 (Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Phthalate?

CompoundList lists 4 suppliers of Phthalate in China, Germany, Hong Kong and Vietnam. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Phthalate?

Suppliers quote Phthalate 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 Phthalate

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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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