CompoundList
Sign in
Cosmetic preservatives

Terephthalaldehyde

Also known as 1,4-Benzenedicarboxaldehyde, Terephthaldehyde, Terephthaldicarboxaldehyde

CAS 623-27-8Formula C8H6O2Molar mass 134.13 g/molEC 210-784-8
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant 25 suppliers listed
Get quotes Compare 25 suppliers
Terephthalaldehyde chemical structure, C8H6O2, CAS 623-27-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Needles from water
Melting point
117 °C
Boiling point
246 °C
Flash point
76 °C
Solubility
In water, 200 mg/L at 25 °C
HS code
291229
Category
Cosmetic preservatives
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Terephthalaldehyde?

Plain description, key identifiers and synonyms

Terephthalaldehyde is a chemical substance with the molecular formula C8H6O2 and a molar mass of 134.13 g/mol. Its CAS registry number is 623-27-8.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
terephthalaldehyde
CAS number
623-27-8 CAS number cross-checkedOther or deprecated CAS: 27456-81-1
EC number
210-784-8
Molecular formula
C8H6O2
UNII
M2Y6E4N2TS
MDL number
MFCD00006949
INCI name
TEREPHTHALALDEHYDE
InChIKey
KUCOHFSKRZZVRO-UHFFFAOYSA-N
InChI
InChI=1S/C8H6O2/c9-5-7-1-2-8(6-10)4-3-7/h1-6H
SMILES (canonical and isomeric)
C1=CC(=CC=C1C=O)C=O

Synonyms

  • 1,4-Benzenedicarboxaldehyde
  • Terephthaldehyde
  • Terephthaldicarboxaldehyde
  • 1,4-Phthalaldehyde
  • p-Diformylbenzene
  • 1,4-Terephthaldicarbaldehyde
  • 1,4-Dicarboxaldehyde-benzene
  • pPhthalaldehyde
  • pFormylbenzaldehyde
  • 4formylbenzaldehyde
  • 1,4Diformylbenzene
  • pBenzenedicarboxaldehyde
  • Terephthalaldehyde (8CI)
  • 1,4Benzenedicarboxaldehyde
  • p-Phthalaldehyde
  • Terephthalic aldehyde
  • Terephthaldialdehyde
  • Terephthaladehyde
  • 4-Formylbenzaldehyde
  • 1,4-Diformylbenzene
  • p-Formylbenzaldehyde
  • p-Benzenedicarboxaldehyde
  • Terephtaldehyde
  • benzene-1,4-dicarbaldehyde
  • Terephtaldehydes
Show all 34 synonyms
  • 1,4-Benzenedialdehyde
  • Benzene-1,4-dicarboxaldehyde
  • p-Phthaldialdehyde
  • 1,4-Benzenedicarbaldehyde
  • p-Benzenedialdehyde
  • terepthaldehyde
  • terephthalaldehyd
  • terephthal aldehyde
  • terephtaldicarboxaldehyde

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

Appearance
Needles from waterexp.
Melting point
117 °Cexp.
Boiling point
246 °Cexp.
Flash point
76 °Cexp.
Solubility
In water, 200 mg/L at 25 °Cexp.

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
134.13 g/molcalc.
Exact mass
134.0368 Dacalc.
LogP (octanol/water)
1.31calc.
Topological polar surface area
34.14 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
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

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H311Toxic in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H331Toxic if inhaled.
  • H335May cause respiratory irritation.
Precautionary statements (22)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

Terephthalaldehyde suppliers

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

All 25 suppliers
25 of 25 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

25 suppliers in 6 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Terephthalaldehyde 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.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Laboratory chemicals, manufacture of substances.

Cosmetic ingredient, INCI name TEREPHTHALALDEHYDE(preservative)

Functional uses

  • Preservative

Cosmetic functions

  • Preservative

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2912.29Indicative HS code

Cyclic aldehydes without other oxygen function, other

World exports in 2024
$435M
+19.0% vs 2023, imports $484M
2019 to 2024
Top exporters
  1. China19.5%
  2. Japan17.4%
  3. India * partner reported13.0%
Top importers
  1. United States22.5%
  2. China9.2%
  3. Singapore8.4%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Terephthalaldehyde?

Terephthalaldehyde is a chemical substance with the molecular formula C8H6O2 and a molar mass of 134.13 g/mol. Its CAS registry number is 623-27-8.

What is the CAS number of Terephthalaldehyde?

The CAS registry number of Terephthalaldehyde is 623-27-8. Other or deprecated CAS numbers: 27456-81-1.

What is the molecular formula and weight of Terephthalaldehyde?

The molecular formula of Terephthalaldehyde is C8H6O2 and its molar mass is 134.13 g/mol.

What is Terephthalaldehyde used for?

Laboratory chemicals, manufacture of substances.

Is Terephthalaldehyde hazardous?

Terephthalaldehyde carries the GHS signal word "Danger". Main hazards: harmful if swallowed, toxic in contact with skin, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Terephthalaldehyde?

Terephthalaldehyde is usually classified under HS code 291229 (Cyclic aldehydes without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Terephthalaldehyde?

CompoundList lists 25 suppliers of Terephthalaldehyde in China, United States, Canada, Czech Republic and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Terephthalaldehyde?

Suppliers quote Terephthalaldehyde 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 Terephthalaldehyde

Get quotes for Terephthalaldehyde

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Terephthalaldehyde
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Terephthalaldehyde with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/terephthalaldehyde-623-27-8" title="Terephthalaldehyde structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Cosmetic preservatives or HS code 291229

25 suppliers
Free quotes, contact stays private
Get quotes