Cyclohexanecarbaldehyde (Cyclohexanal) CAS 2043-61-0: Identity and Sourcing

Cyclohexanecarbaldehyde, commonly called cyclohexanecarboxaldehyde or cyclohexanal, is the CAS 2043-61-0 aliphatic aldehyde with formula C₇H₁₂O. NIST and PubChem support these names and the molecular identity. Buyers should state the CAS and structure because a formula-only search, a partial name or an unsaturated “cyclohexene carboxaldehyde” reference can identify a different compound.

CAS 2043-61-0 identity at a glance

Identity sources: NIST Chemistry WebBook: CAS 2043-61-0, PubChem CID 16275 et ECHA substance information.

Are cyclohexanal and cyclohexanecarboxaldehyde the same?

For the record identified by CAS 2043-61-0, NIST lists cyclohexanal and cyclohexanecarbaldehyde among the synonyms for cyclohexanecarboxaldehyde. PubChem uses cyclohexanecarbaldehyde as the IUPAC name. A buyer can use these supported names together with the CAS and structure identifiers in an RFQ.

The substance is an aliphatic aldehyde, not an aromatic aldehyde. The ring is saturated cyclohexane; “hexahydrobenzaldehyde” is a legacy synonym and does not make the molecule aromatic.

How to avoid name and structure confusion

What is Cyclohexanecarboxaldehyde used for?

TCI categorizes its CAS 2043-61-0 product as a non-heterocyclic carbonyl building block and aldehyde. At that class level, a process team may evaluate Cyclohexanecarboxaldehyde as an aldehyde reagent or intermediate in a defined synthetic transformation.

Chemical identity alone does not prove suitability for an API, pharmaceutical, food, flavor, fragrance, polymer, coating, adhesive, cosmetic, agrochemical or finished product. The buyer must qualify the exact reaction, impurity profile, scale, material controls and destination-market requirements against a current supplier specification and SDS.

Why catalog physical values must be source-labeled

Current TCI information for TCI product C0880 lists its own >98.0% GC specification, clear colorless-to-almost-colorless appearance, boiling point 159 °C, flash point 40 °C, specific gravity 0.93 and refractive index 1.45. The old Longchang article displayed different boiling-point, flash-point and density values.

Those differences are a reason to request source, method, test conditions and current lot documentation. TCI fields are not a Longchang specification, grade, lot result, inventory statement or delivery promise. Reference: TCI C0880 product record.

How to read the legacy Longchang product record

The historical product entry contains the fields below but shows no method, lot number, effective date or current approval status. They are retained as qualification prompts, not as a current offer.

CAS 2043-61-0 RFQ checklist

• State Cyclohexanecarbaldehyde / Cyclohexanecarboxaldehyde, CAS 2043-61-0 and the structure identifier where ambiguity matters.
• Define assay method and basis, appearance/color, water or moisture method and any route-specific physical-property limits.
• Define named related substances, unknown impurity limits, total impurities and any oxidation or stability markers required by the route.
• State the intended transformation, quantity, scale, packaging/headspace constraints, destination and transport requirements.
• Request the current supplier specification, applicable lot COA, current SDS status, document versions, availability and quotation validity.

Safety and handling boundary

TCI’s current SDS classifies its referenced CAS 2043-61-0 material as a category-3 flammable liquid and a category-2 skin/eye irritant. That third-party classification is safety context, not proof of a Longchang lot’s complete classification. This page is not a substitute for an SDS. Use the current supplier SDS, local regulations and a site-specific risk assessment for receipt, storage, transfer, reaction, transport and disposal.

Safety reference: TCI C0880 Safety Data Sheet.

Request current CAS 2043-61-0 information

Courriel info@longchangchemical.com with the product name, CAS, intended transformation, required specification, quantity, packaging constraints, destination and document requirements.

Review the CAS 2043-61-0 product sourcing page.

Frequently asked questions

Is cyclohexanal an aromatic aldehyde?

No. PubChem describes Cyclohexanecarbaldehyde as an aliphatic aldehyde. Its cyclohexane ring is saturated.

Does the historical ≥99% field guarantee current purity?

No. It lacks a displayed current method, effective date and lot context. Qualification requires a current specification and an applicable lot COA.

Is CAS 2043-61-0 food grade or an API?

The identity sources establish a chemical substance record, not food-grade, API or finished-product status. Grade, intended use and market compliance require material-specific evidence and buyer qualification.