3,4-Dihydro-2H-pyran-2-carbaldehyde

Modify Date: 2026-07-08 15:54:35

3,4-Dihydro-2H-pyran-2-carbaldehyde Structure
3,4-Dihydro-2H-pyran-2-carbaldehyde structure
 Common Name 3,4-Dihydro-2H-pyran-2-carbaldehyde
CAS Number 100-73-2 Molecular Weight 112.127
Density 1.2±0.1 g/cm3 Boiling Point 185.1±39.0 °C at 760 mmHg
Molecular Formula C6H8O2 Melting Point -100ºC
MSDS N/A Flash Point 73.4±20.6 °C

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 3,4-dihydro-2H-pyran-2-carbaldehyde
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.2±0.1 g/cm3
Boiling Point 185.1±39.0 °C at 760 mmHg
Melting Point -100ºC
Molecular Formula C6H8O2
Molecular Weight 112.127
Flash Point 73.4±20.6 °C
Exact Mass 112.052429
PSA 26.30000
LogP -0.17
Vapour Pressure 0.7±0.4 mmHg at 25°C
Index of Refraction 1.547
InChIKey NPWYTMFWRRIFLK-UHFFFAOYSA-N
SMILES O=CC1CCC=CO1

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UP6825000
CHEMICAL NAME :
2H-Pyran-2-carboxaldehyde, 3,4-dihydro-
CAS REGISTRY NUMBER :
100-73-2
BEILSTEIN REFERENCE NO. :
0107244
LAST UPDATED :
199806
DATA ITEMS CITED :
6
MOLECULAR FORMULA :
C6-H8-O2
MOLECULAR WEIGHT :
112.14
WISWESSER LINE NOTATION :
T6O BUTJ FVH

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Open irritation test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
UCDS** Union Carbide Data Sheet. (Union Carbide Corp., 39 Old Ridgebury Rd., Danbury, CT 06817) Volume(issue)/page/year: 7/27/1965 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
4920 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU. Volume(issue)/page/year: 10,61,1954
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
3225 ppm/4H
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - effect, not otherwise specified Lungs, Thorax, or Respiration - respiratory depression Lungs, Thorax, or Respiration - other changes
REFERENCE :
TOXID9 Toxicologist. (Soc. of Toxicology, Inc., 475 Wolf Ledge Parkway, Akron, OH 44311) V.1- 1981- Volume(issue)/page/year: 13,228,1993 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
194 ppm/6H/9D-I
TOXIC EFFECTS :
Kidney, Ureter, Bladder - changes in bladder weight Blood - changes in platelet count Biochemical - Metabolism (Intermediary) - other proteins
REFERENCE :
TOXID9 Toxicologist. (Soc. of Toxicology, Inc., 475 Wolf Ledge Parkway, Akron, OH 44311) V.1- 1981- Volume(issue)/page/year: 36(1,pt2),272,1997

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes Xn
Risk Phrases R10
Safety Phrases 16-26-33-36/37/39-45
RIDADR UN 2607
RTECS UP6825000
Packaging Group III
Hazard Class 3.2

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

3,4-Dihydro-2H-pyran-2-carboxaldehyde
5-Hexenal,2,6-epoxy
Acrolein dimer
2-formyldihydropyran
2-Propenal dimer
3,4-Dihydro-2H-pyran-2-carbaldehyd
3,4-Dihydro-2H-pyran-2-carbaldehyde
EINECS 202-884-5
2H-PYRAN-2-CARBOXALDEHYDE,3,4-DIHYDRO
Pyran aldehyde
2-Formyl-3,4-dihydro-2H-pyran
MFCD00059170

 3,4-Dihydro-2H-pyran-2-carbaldehyde | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the boiling point of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: Boiling point of 3,4-dihydro-2H-pyran-2-carbaldehyde is 185.1±39.0 °C at 760 mmHg.
Q: What is the CAS number of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: CAS number of 3,4-dihydro-2H-pyran-2-carbaldehyde is 100-73-2.
Q: What is the molecular formula of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: Molecular formula of 3,4-dihydro-2H-pyran-2-carbaldehyde is C6H8O2.
Q: What are the downstream products of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: Related downstream products(CAS) of 3,4-dihydro-2H-pyran-2-carbaldehyde: 34723-82-5;3749-36-8;19611-45-1;22347-71-3;110-94-1;111-27-3;629-11-8;280-16-0;22625-07-6.
Q: What is the InChIKey of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: InChIKey of 3,4-dihydro-2H-pyran-2-carbaldehyde is NPWYTMFWRRIFLK-UHFFFAOYSA-N.
Q: What is the polar surface area (PSA) of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: Polar surface area (PSA) of 3,4-dihydro-2H-pyran-2-carbaldehyde is 26.30000.
Q: What is the SMILES notation of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: SMILES notation of 3,4-dihydro-2H-pyran-2-carbaldehyde is O=CC1CCC=CO1.
Q: What is the LogP of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: LogP of 3,4-dihydro-2H-pyran-2-carbaldehyde is -0.17.
Q: What English synonyms does 3,4-dihydro-2H-pyran-2-carbaldehyde have?
A: English synonyms of 3,4-dihydro-2H-pyran-2-carbaldehyde: 3,4-Dihydro-2H-pyran-2-carboxaldehyde, 5-Hexenal,2,6-epoxy, Acrolein dimer, 2-formyldihydropyran, 2-Propenal dimer, 3,4-Dihydro-2H-pyran-2-carbaldehyd, 3,4-Dihydro-2H-pyran-2-carbaldehyde, EINECS 202-884-5, 2H-PYRAN-2-CARBOXALDEHYDE,3,4-DIHYDRO, Pyran aldehyde, 2-Formyl-3,4-dihydro-2H-pyran, MFCD00059170.
Q: What is the English name of 3,4-dihydro-2H-pyran-2-carbaldehyde?
A: The English name of 3,4-dihydro-2H-pyran-2-carbaldehyde is 3,4-dihydro-2H-pyran-2-carbaldehyde.

 3,4-Dihydro-2H-pyran-2-carbaldehydefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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