Pyridine

Modify Date: 2026-06-30 11:13:16

Pyridine Structure
Pyridine structure
 Common Name Pyridine
CAS Number 110-86-1 Molecular Weight 79.100
Density 1.0±0.1 g/cm3 Boiling Point 115.3±0.0 °C at 760 mmHg
Molecular Formula C5H5N Melting Point -42 °C
MSDS Chinese USA Flash Point 20.0±0.0 °C
Symbol GHS02 GHS07
GHS02, GHS07		 Signal Word Danger

 Names

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

Name pyridine
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 1.0±0.1 g/cm3
Boiling Point 115.3±0.0 °C at 760 mmHg
Melting Point -42 °C
Molecular Formula C5H5N
Molecular Weight 79.100
Flash Point 20.0±0.0 °C
Exact Mass 79.042198
PSA 12.89000
LogP 0.73
Vapour density 2.72 (vs air)
Vapour Pressure 22.8±0.2 mmHg at 25°C
Index of Refraction 1.501
InChIKey JUJWROOIHBZHMG-UHFFFAOYSA-N
SMILES c1ccncc1
Stability Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.
Water Solubility Miscible
Freezing Point -42℃

 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 :
UR8400000
CHEMICAL NAME :
Pyridine
CAS REGISTRY NUMBER :
110-86-1
LAST UPDATED :
199806
DATA ITEMS CITED :
64
MOLECULAR FORMULA :
C5-H5-N
MOLECULAR WEIGHT :
79.11
WISWESSER LINE NOTATION :
T6NJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
891 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis Behavioral - somnolence (general depressed activity) Behavioral - coma
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
28500 mg/m3/1H
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
866 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
866 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
360 mg/kg
TOXIC EFFECTS :
Behavioral - sleep Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1500 mg/kg
TOXIC EFFECTS :
Behavioral - sleep Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
950 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1250 mg/kg
TOXIC EFFECTS :
Behavioral - sleep Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
420 mg/kg
TOXIC EFFECTS :
Behavioral - sleep Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
880 mg/kg
TOXIC EFFECTS :
Cardiac - change in rate Vascular - BP lowering not characterized in autonomic section Lungs, Thorax, or Respiration - respiratory depression
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
1121 mg/kg
TOXIC EFFECTS :
Behavioral - ataxia Gastrointestinal - changes in structure or function of salivary glands Liver - other changes
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
15 mg/kg
TOXIC EFFECTS :
Peripheral Nerve and Sensation - flaccid paralysis without anesthesia (usually neuromuscular blockage) Behavioral - general anesthetic
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
4 gm/kg
TOXIC EFFECTS :
Behavioral - general anesthetic Behavioral - tremor Lungs, Thorax, or Respiration - other changes
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
870 mg/kg
TOXIC EFFECTS :
Behavioral - general anesthetic Behavioral - tremor Lungs, Thorax, or Respiration - other changes
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Parenteral
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
870 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - species unspecified
DOSE/DURATION :
1500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Mammal - species unspecified
DOSE/DURATION :
10 gm/m3
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
25 mg/kg/14W-I
TOXIC EFFECTS :
Blood - change in clotting factors Related to Chronic Data - death
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
4200 mg/kg/28D-C
TOXIC EFFECTS :
Liver - changes in liver weight Endocrine - changes in adrenal weight
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1 mg/m3/24H/60D-C
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase Biochemical - Metabolism (Intermediary) - other proteins
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
494 mg/kg/5D-I
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other Enzymes

MUTATION DATA

TYPE OF TEST :
Sex chromosome loss and nondisjunction
TEST SYSTEM :
Yeast - Saccharomyces cerevisiae
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 163,23,1986 *** REVIEWS *** ACGIH TLV-TWA 16 mg/m3 (5 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 TOXICOLOGY REVIEW PAREAQ Pharmacological Reviews. (Williams & Wilkins, 428 E. Preston St., Baltimore, MD 21202) V.1- 1949- Volume(issue)/page/year: 4,1,1952 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 5 ppm (15 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,220,1971 OSHA PEL (Gen Indu):8H TWA 5 ppm (15 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 5 ppm (15 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 5 ppm (15 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 5 ppm (15 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 5 ppm (15 mg/m3) JAN 1993 OEL-AUSTRALIA:TWA 5 ppm (15 mg/m3) JAN 1993 OEL-BELGIUM:TWA 5 ppm (16 mg/m3) JAN 1993 OEL-DENMARK:TWA 5 ppm (15 mg/m3) JAN 1993 OEL-FINLAND:TWA 5 ppm (15 mg/m3);STEL 10 ppm (30 mg/m3);Skin JAN 1993 OEL-FRANCE:TWA 5 ppm (15 mg/m3);STEL 10 ppm (30 mg/m3) JAN 1993 OEL-GERMANY:TWA 5 ppm (15 mg/m3) JAN 1993 OEL-HUNGARY:TWA 5 mg/m3;STEL 10 mg/m3;Skin JAN 1993 OEL-THE NETHERLANDS:TWA 5 ppm (15 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 5 mg/m3 JAN 1993 OEL-POLAND:TWA 5 mg/m3 JAN 1993 OEL-RUSSIA:STEL 5 mg/m3 JAN 1993 OEL-SWEDEN:TWA 5 ppm (16 mg/m3);STEL 10 ppm (35 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 5 ppm (15 mg/m3);STEL 10 ppm (30 mg/m3) JAN 1993 OEL-TURKEY:TWA 5 ppm (15 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 5 ppm (15 mg/m3);STEL 10 ppm (30 mg/m3) JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO PYRIDINE-air:10H TWA 5 ppm REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 65080 No. of Facilities: 1103 (estimated) No. of Industries: 22 No. of Occupations: 18 No. of Employees: 29286 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 65080 No. of Facilities: 1558 (estimated) No. of Industries: 32 No. of Occupations: 42 No. of Employees: 42908 (estimated) No. of Female Employees: 10568 (estimated)

 Safety Information

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

Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger
Hazard Statements H225-H302 + H312 + H332-H315-H319
Precautionary Statements P210-P280-P305 + P351 + P338
Personal Protective Equipment Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes F:Flammable;Xn:Harmful;
Risk Phrases R11;R20/21/22
Safety Phrases S36/37/39-S38-S45-S61-S28A-S26-S28-S24/25-S22-S36/37-S16-S7
RIDADR UN 1282 3/PG 2
WGK Germany 2
RTECS UR8400000
Packaging Group II
Hazard Class 3
HS Code 2933990090

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2933310010
Summary 2933310010 pyridine。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.0%。general tariff:20.0%

 Articles421

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Urinary metabolic fingerprinting of mice with diet-induced metabolic derangements by parallel dual secondary column-dual detection two-dimensional comprehensive gas chromatography.

J. Chromatogr. A. 1361 , 265-76, (2014)

This study investigates the potential of a parallel dual secondary column-dual detection two-dimensional comprehensive GC platform (GC×2GC-MS/FID) for metabolic profiling and fingerprinting of mouse u...

The identification of a novel SIRT6 modulator from Trigonella foenum-graecum using ligand fishing with protein coated magnetic beads.

J. Chromatogr. B. Analyt. Technol. Biomed. Life Sci. 968 , 105-11, (2014)

SIRT6 is a histone deacetylase that has been proposed as a potential therapeutic target for metabolic disorders and the prevention of age-associated diseases. Thus the identification of compounds that...

Discovery of optimal zeolites for challenging separations and chemical transformations using predictive materials modeling.

Nat. Commun. 6 , 5912, (2015)

Zeolites play numerous important roles in modern petroleum refineries and have the potential to advance the production of fuels and chemical feedstocks from renewable resources. The performance of a z...

 Synonyms

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

Pyridine,nonaqueous titration grade
EINECS 203-809-9
PYRIDINE
Pyridine,AcroSeal,Extra Dry
MFCD00002920

 Pyridine | FAQ

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

Q: What is the SMILES notation of pyridine?
A: SMILES notation of pyridine is c1ccncc1.
Q: What is the boiling point of pyridine?
A: Boiling point of pyridine is 115.3±0.0 °C at 760 mmHg.
Q: What is the molecular weight of pyridine?
A: Molecular weight of pyridine is 79.100.
Q: What is the polar surface area (PSA) of pyridine?
A: Polar surface area (PSA) of pyridine is 12.89000.
Q: What are the downstream products of pyridine?
A: Related downstream products(CAS) of pyridine: 111876-50-7;1111-39-3;1063-87-2;10498-35-8;822-86-6;110601-03-1;111908-95-3;107986-49-2;110823-85-3;107134-95-2.
Q: What English synonyms does pyridine have?
A: English synonyms of pyridine: Pyridine,nonaqueous titration grade, EINECS 203-809-9, PYRIDINE, Pyridine,AcroSeal,Extra Dry, MFCD00002920.
Q: How is the water solubility of pyridine?
A: Water solubility of pyridine: Miscible.
Q: What is the LogP of pyridine?
A: LogP of pyridine is 0.73.
Q: What is the CAS number of pyridine?
A: CAS number of pyridine is 110-86-1.
Q: What is the molecular formula of pyridine?
A: Molecular formula of pyridine is C5H5N.

 Pyridinefactory

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

Shanghai Nianxing Industrial Co., Ltd
Henan Tianfu Chemical Co., Ltd.
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Chemsrc provides Pyridine(CAS#:110-86-1) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Pyridine are included as well.>> amp version: Pyridine

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