Cyclohexane

CAS 110-82-7

Listed as a solvent by the US.

Listed as solvents and vehicles (US)
Chemical structure of Cyclohexane, from PubChem compound 8078
Structure from PubChem CID 8078 (National Library of Medicine, public domain). A depiction of one compound: where a listing covers a family, or a substance has no single structure, this page shows none.

Cyclohexane is a colourless flammable liquid used as an extraction solvent. Like the other solvents JECFA specifies, it is meant to be removed from the food it was used on, and the specification governs its purity rather than a level in food.

Where it is and isn’t permitted

Status of Cyclohexane by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
Australia and New ZealandFood Standards Australia New ZealandNo listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it.
CanadaHealth CanadaNo listing matchedHealth Canada’s lists name additives without E or INS numbers, so this site matches them by exact name. A substance listed there under a name this site does not recognise has no row here.
European UnionEuropean Commission / EFSANo listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it.
Great BritainFood Standards Agency / Food Standards ScotlandNo listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it.
JapanConsumer Affairs AgencyNo listing matchedThis site imports only Japan’s list of designated additives (Appended Table 1 to the Regulations for Enforcement of the Food Sanitation Act), matched by English name. Existing additives, natural flavouring agents and ordinary foods used as additives are permitted outside that list and are not imported, so an empty row does not show that Japan does not permit the substance.
South KoreaMinistry of Food and Drug SafetyNo listing matchedThis site imports Part III of South Korea’s Standards and Specifications for Food Additives, matched by CAS number, then INS number, then exact name. Mixed preparations and sanitisers are not imported, and an entry whose identifiers disagreed with a page’s is held for review, so an empty row does not show that South Korea does not permit the substance.
United StatesFood and Drug AdministrationNot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Made by hydrogenating benzene, from petroleum feedstocks.

  • Vegan
  • Vegetarian

Compare other additives on the dietary indexes.

CAS registry number
110-82-7
InChIKey
XDTMQSROBMDMFD-UHFFFAOYSA-N
PubChem
CID 8078

How JECFA defines it

The international specification for identity and purity, prepared by the Joint FAO/WHO Expert Committee on Food Additives and published by FAO. It is a different document from any above, written by a different body and revised on its own cycle; it is advisory, and a country adopts it or does not.

Cyclohexane

Synonyms: Hexahydrobenzene

Assay, identification and purity criteria

Description and assay

Specification history
Prepared at the 23rd JECFA (1979), published in FNP 12 (1979) and in FNP 52 (1992). Metals and arsenic specifications revised at the 63rd JECFA (2004). No ADI was allocated at the 23rd JECFA (1979)
DEFINITION Chemical names C.A.S. number Chemical formula
Cyclohexane 110-82-7 C 6 H 12
Formula weight Assay
84.16 Not less than 99.5% w/w
DESCRIPTION FUNCTIONAL USES
Colourless, clear, flammable liquid, with characteristic odour Extraction solvent
METHOD OF ASSAY
Proceed as directed under the Gas-liquid chromatographic method for Determination of Aromatic Hydrocarbons (see Volume 4) and calculate the content by the method of area percentage (area normalization).

Identification

Solubility (Vol. 4) Specific gravity (Vol. 4) Distillation range (Vol. 4)
Insoluble in water; miscible with ethanol and ether 0.776 - 0.780 80 o - 82 o

Purity criteria

Non-volatile residue (Vol. 4) Sulphur (Vol. 4) Benzene (Vol. 4)
Not more than 1 mg/100 ml Not more than 10 mg/kg Not more than 0.1% v/v Determine by the method Aromatic Hydrocarbon Determination
Polycyclic aromatic hydrocarbons (Vol. 4)
The following absorbance limits per cm of optical path length shall not be exceeded: wavelength (nm) absorbance 280 - 289 0.15 290 - 299 0.12 300 - 359 0.08 360 - 400 0.02
Lead (Vol. 4)
Not more than 2 mg/kg Determine using an atomic absorption technique appropriate to the specified level. The selection of sample size and method of sample preparation may be based on the principles of the method described in Volume 4, “Instrumental Methods.”

FAO JECFA Monograph 1 (2006)

Every name it appears under

60 recorded names. A label may use any of them.

CAS registry number

  • 110-82-7
  • 12217-02-6

Other names

  • 48K5MKG32S
  • Acid red 300
  • ASTM Method D5191 Vapor Pressure - 22.5 kPa (3.26 psi)
  • Benzene hexahydride
  • Benzene, hexahydro-
  • Benzenehexahydride
  • CAS-110-82-7
  • Caswell No. 269
  • CCRIS 3928
  • Cicloesano
  • Ciclohexano
  • cyclo-hexane
  • Cyclohexaan
  • Cyclohexan
  • Cyclohexane
  • Cyclohexane 2000 microg/mL in Methanol
  • Cyclohexane packed in clear glass ampule
  • Cyclohexane Solution in Methanol, 1000ug/mL
  • Cyclohexane Solution in Methanol, 100ug/mL
  • Cyclohexane, ACS Grade
  • Cyclohexane, ACS reagent, >=99%
  • Cyclohexane, ACS spectrophotometric grade, >=99%
  • Cyclohexane, analytical standard
  • Cyclohexane, anhydrous, 99.5%
  • Cyclohexane, AR, >=99.5%
  • Cyclohexane, for HPLC
  • Cyclohexane, for HPLC, >=99.7%
  • Cyclohexane, for HPLC, >=99.9%
  • Cyclohexane, HPLC Grade
  • Cyclohexane, HPLC grade, >=99.9%
  • Cyclohexane, HPLC UV/IR isocratic grade, min. 99.9%
  • Cyclohexane, JIS special grade
  • Cyclohexane, Laboratory Reagent, >=99.8%
  • Cyclohexane, LR, >=99%
  • Cyclohexane, p.a., 99.0%
  • Cyclohexane, p.a., ACS reagent, 99.0%
  • Cyclohexane, Pharmaceutical Secondary Standard; Certified Reference Material
  • Cyclohexane, puriss. p.a., ACS reagent, >=99.5% (GC)
  • Cyclohexane, puriss., >=99.5% (GC)
  • Cyclohexane, SAJ first grade, >=99.0%
  • Cyclohexane, UV HPLC spectroscopic, 99.5%
  • CYCLOHEXANE- D12
  • Cykloheksan
  • cylcohexane
  • cylohexane
  • EPA Pesticide Chemical Code 025901
  • ghl.PD_Mitscher_leg0.242
  • hexahydro-Benzene
  • Hexahydrobenzene
  • Hexamethylene
  • Hexanaphthene
  • HSDB 60
  • InChI=1/C6H12/c1-2-4-6-5-3-1/h1-6H
  • Phthalate ester quality control substance in polyvinyl chloride
  • RCRA waste no. U056
  • RCRA waste number U056
  • WLN: L6TJ
  • Zyklohexan

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated rather than machine-read, and none has been written for this substance yet.

Common questions

Assembled from what is above, in the words the questions are usually asked in. Each answer is the same statement the relevant section makes, with the same citations behind it.

What is Cyclohexane?
Cyclohexane is a colourless flammable liquid used as an extraction solvent. Like the other solvents JECFA specifies, it is meant to be removed from the food it was used on, and the specification governs its purity rather than a level in food.
What is Cyclohexane used for in food?
It is listed as a solvent — the role the US assigns it. This page shows every function each regulator records, with the citation for each.
Is Cyclohexane vegan?
Yes. Cyclohexane is not derived from animals, and is suitable for vegetarians. This page says what it is made from and how.

Sources for this page

  • jecfaspecs retrieved 2026-09-23

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable: a JSON record of this additive is given on request —how to ask for access.

Follow changes to Cyclohexane:Atom feed — regulatory events, and any change the weekly refresh detects in its provisions.