Pyrethrins

Modify Date: 2026-06-30 23:08:58

Pyrethrins structure	Common Name	Pyrethrins
	CAS Number	8003-34-7	Molecular Weight	328.445
	Density	1.0±0.1 g/cm3	Boiling Point	421.7±45.0 °C at 760 mmHg
	Molecular Formula	C₂₁H₂₈O₃	Melting Point	90-95 °C(lit.)
	MSDS	Chinese USA	Flash Point	181.0±28.8 °C
	Symbol	GHS07, GHS09	Signal Word	Warning

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

Name	pyrethrins
Synonym	More Synonyms

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	421.7±45.0 °C at 760 mmHg
Melting Point	90-95 °C(lit.)
Molecular Formula	C₂₁H₂₈O₃
Molecular Weight	328.445
Flash Point	181.0±28.8 °C
Exact Mass	328.203857
PSA	113.04000
LogP	5.39
Vapour Pressure	0.0±1.0 mmHg at 25°C
Index of Refraction	1.524
InChIKey	VXSIXFKKSNGRRO-YWUDCVDHSA-N
SMILES	C=CC=CCC1=C(C)C(OC(=O)C2C(C=C(C)C(=O)OC)C2(C)C)CC1=O.C=CC=CCC1=C(C)C(OC(=O)C2C(C=C(C)C)C2(C)C)CC1=O

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

Pyrethrins MSDS(Chinese)

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

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UR4200000

CHEMICAL NAME :: Pyrethrum

CAS REGISTRY NUMBER :: 8003-34-7

LAST UPDATED :: 199712

WISWESSER LINE NOTATION :: L5V BUTJ B2U2U1 C1 DOV- BL3TJ A1 A1 C1U2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85GYAV "Pflanzenschutz-und Schaedlingsbekaempfungsmittel: Abriss einer Toxikologie und Therapie von Vergiftungen," 2nd ed., Klimmer, O.R., Hattingen, Fed. Rep. Ger., Hundt-Verlag, 1971 Volume(issue)/page/year: -,142,1971

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - child

DOSE/DURATION :: 750 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CMEP** "Clinical Memoranda on Economic Poisons," U.S. Dept. HEW, Public Health Service, Communicable Disease Center, Atlanta, GA, 1956 Volume(issue)/page/year: -,1,1956

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GUCHAZ Guide to the Chemicals Used in Crop Protection. (Information Canada, 171 Slater St., Ottawa, Ont., Canada) Volume(issue)/page/year: 6,442,1973

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1350 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YKYUA6 Yakkyoku. Pharmacy. (Nanzando, 4-1-11, Yushima, Bunkyo-ku, Tokyo, Japan) V.1- 1950- Volume(issue)/page/year: 37,1481,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: WRPCA2 World Review of Pest Control. (London, UK) V.1-10, 1962-71. Discontinued. Volume(issue)/page/year: 3,28,1964

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 370 mg/kg

TOXIC EFFECTS :: Behavioral - tremor Behavioral - excitement Behavioral - ataxia

REFERENCE :: EVHPAZ EHP, Environmental Health Perspectives. (U.S. Government Printing Office, Supt of Documents, Washington, DC 20402) No.1- 1972- Volume(issue)/page/year: 14,15,1976

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 25 mg/kg

TOXIC EFFECTS :: Behavioral - excitement Behavioral - ataxia Lungs, Thorax, or Respiration - respiratory stimulation

REFERENCE :: PSEBAA Proceedings of the Society for Experimental Biology and Medicine. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1903/04- Volume(issue)/page/year: 34,135,1936

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 7 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: WRPCA2 World Review of Pest Control. (London, UK) V.1-10, 1962-71. Discontinued. Volume(issue)/page/year: 3,28,1964

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 300 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: EVHPAZ EHP, Environmental Health Perspectives. (U.S. Government Printing Office, Supt of Documents, Washington, DC 20402) No.1- 1972- Volume(issue)/page/year: 14,109,1976

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - chronic pulmonary edema Gastrointestinal - hypermotility, diarrhea Nutritional and Gross Metabolic - weight loss or decreased weight gain

REFERENCE :: PSEBAA Proceedings of the Society for Experimental Biology and Medicine. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1903/04- Volume(issue)/page/year: 34,135,1936

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 50 mg/kg

TOXIC EFFECTS :: Behavioral - excitement Behavioral - ataxia Lungs, Thorax, or Respiration - respiratory stimulation

REFERENCE :: PSEBAA Proceedings of the Society for Experimental Biology and Medicine. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1903/04- Volume(issue)/page/year: 34,135,1936

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - species unspecified

DOSE/DURATION :: 250 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AMIHAB AMA Archives of Industrial Health. (Chicago, IL) V.11-21, 1955-60. For publisher information, see AEHLAU. Volume(issue)/page/year: 14,178,1956 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4600 mg/kg/23D-I

TOXIC EFFECTS :: Liver - changes in liver weight Biochemical - Metabolism (Intermediary) - lipids including transport

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 24,298,1973 ** REPRODUCTIVE DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 500 mg/kg

SEX/DURATION :: female 6-15 day(s) after conception

REFERENCE :: JTEHD6 Journal of Toxicology and Environmental Health. (Hemisphere Pub., 1025 Vermont Ave., NW, Washington, DC 20005) V.1- 1975/76- Volume(issue)/page/year: 10,111,1982 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen 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 ACGIH TLV-TWA 5 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: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 MSHA STANDARD-air:TWA 5 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: 3,219,1971 OSHA PEL (Gen Indu):8H TWA 5 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 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 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 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 mg/m3 JAN 1993 OEL-AUSTRALIA:TWA 5 mg/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg/m3 JAN 1993 OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-FINLAND:TWA 5 mg/m3;STEL 10 mg/m3 JAN 1993 OEL-FRANCE:TWA 5 mg/m3 JAN 1993 OEL-GERMANY:TWA 5 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg/m3 JAN 1993 OEL-THAILAND:TWA 5 mg/m3 JAN 1993 OEL-TURKEY:TWA 5 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3;STEL 10 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 PYRETHRUM-air:10H TWA 5 mg/m3 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 - 65070 No. of Facilities: 1081 (estimated) No. of Industries: 10 No. of Occupations: 7 No. of Employees: 4375 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 65070 No. of Facilities: 1031 (estimated) No. of Industries: 7 No. of Occupations: 11 No. of Employees: 11296 (estimated) No. of Female Employees: 1537 (estimated)

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

Symbol	GHS07, GHS09
Signal Word	Warning
Hazard Statements	H302-H312-H332-H410
Precautionary Statements	P273-P280-P501
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	Xn:Harmful;
Risk Phrases	R20/21/22;R50/53
Safety Phrases	13-60-61
RIDADR	UN 2810 6.1/PG 3
WGK Germany	3
RTECS	UR4200000
Packaging Group	III
Hazard Class	6.1(b)
HS Code	29400010

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

HS Code	29400010

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

3-(2-propenyl)-2-methyl-4-oxo-2-cyclopentenyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate

2-methyl-4-oxo-3-(2-propenyl)cyclopent-2-en-1-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropane carboxylate

MFCD00078611

EINECS 232-919-8

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

Q: What is the English name of pyrethrins?

A: The English name of pyrethrins is pyrethrins.

Q: What is the molecular weight of pyrethrins?

A: Molecular weight of pyrethrins is 328.445.

Q: What is the polar surface area (PSA) of pyrethrins?

A: Polar surface area (PSA) of pyrethrins is 113.04000.

Q: What is the molecular formula of pyrethrins?

A: Molecular formula of pyrethrins is C21H28O3.

Q: What is the boiling point of pyrethrins?

A: Boiling point of pyrethrins is 421.7±45.0 °C at 760 mmHg.

Q: What English synonyms does pyrethrins have?

A: English synonyms of pyrethrins: 3-(2-propenyl)-2-methyl-4-oxo-2-cyclopentenyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, 2-methyl-4-oxo-3-(2-propenyl)cyclopent-2-en-1-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropane carboxylate, MFCD00078611, EINECS 232-919-8.

Q: What is the CAS number of pyrethrins?

A: CAS number of pyrethrins is 8003-34-7.

Q: What is the LogP of pyrethrins?

A: LogP of pyrethrins is 5.39.

Q: What is the InChIKey of pyrethrins?

A: InChIKey of pyrethrins is VXSIXFKKSNGRRO-YWUDCVDHSA-N.

Q: What is the SMILES notation of pyrethrins?

A: SMILES notation of pyrethrins is C=CC=CCC1=C(C)C(OC(=O)C2C(C=C(C)C(=O)OC)C2(C)C)CC1=O.C=CC=CCC1=C(C)C(OC(=O)C2C(C=C(C)C)C2(C)C)CC1=O.

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.

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.

Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Pyrethrins
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Pyrethrins
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

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Pyrethrins

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