ATRAZINE

Chemical Identification
CAS #	1912-24-9
Formula	C₈H₁₄ClN₅
Synonyms	2-chloro-4-ethylamino-6-isopropylamino-s-triazine; 6-chloro-N-ethyl-N'- (1-methylethyl)-1,3,5-triazine-2,4-diamine

Physical Properties
Physical description	Colorless or white, odorless, crystalline powder.
Boiling point	decomposes	Molecular weight	215.7
Freezing point/melting point	340°F	Vapor pressure	0.0000003 mmHg
Flash point		Vapor density
Specific gravity	1.19	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	1
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time^*
Sampling volume (TWA)^*
Sampling flow rate (TWA)^*
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments
Method reference
Notes
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	5 mg/m³	TLV-TWA	2 mg/m³ (inhalable particulate matter) [2013]	PEL-TWA	5 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	N	Skin notation	N
Notes: Not established		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-3, TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Atrazine

NIOSH: Pocket Guide to Chemical Hazards - Atrazine

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Atrazine [1912-24-9] and related symmetrical triazines. See annual publication for most recent information.
Catenacci, G., Barbieri, F., Bersani, M., Ferioli, A., Cottica, D. and Maroni, M.: Biological monitoring of human exposure to atrazine. Toxicol. Lett. 69(2): 217-222, 1993.
Cooper, R.L., Stoker, T.E., Tyrey, L., Goldman, J.M. and McElroy, W.K.: Atrazine disrupts the hypothalamic control of pituitary-ovarian function. Toxicol. Sci. 53(2): 297-307, 2000.
Lang, D.H., Lettie, A.E. and Bocker, R.H.: Identification of enzymes involved in the metabolism of atrazine, terbuthylazine, ametryne, and terbutryne in human liver microsomes. Chem. Res. Toxicol. 10(9): 1037-1044, 1997.
Rogers, M.D.: Risk analysis under uncertainty, the Precautionary Principle, and the new EU chemicals strategy. Regul. Toxicol. Pharmacol. 37(3): 370-381, 2003.
Stoker, T.E., Guidici, D.L., Laws, S.C. and Cooper, R.L.: The effects of atrazine metabolites on puberty and thyroid function in the male Wistar rat. Toxicol. Sci. 67(2): 198-206, 2002.
Sullivan, K.B. and Spence, K.M.: Effects of sublethal concentrations of atrazine and nitrate on metamorphosis of the African clawed frog. Environ. Toxicol. Chem. 22(3): 627-635, 2003.
Swan, S.H., et al.: Semen quality in relation to biomarkers of pesticide exposure. Environ. Health Perspect. 111(12): 1478-1484, 2003.

Last Updated Date : 12/17/2020

ATRAZINE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References