ALACHLOR

Chemical Identification

CAS # 15972-60-8
Formula

C₁₄H₂₀ClNO₂

Synonyms

lasso; acetanilide, 2 - chloro-2',6'-diethyl-N-(methoxymethyl); 2-chloro-N-(2,6-diethylphenyl) N-(methoxymethyl) acetamide; Alamex; alochlor; CP50144; metachlor; methachlor

Physical Properties

Physical description Crystalline cream-colored solid.
Boiling point 212°F at 0.02 mmHg Molecular weight 269.77
Freezing point/melting point 104-106°F Vapor pressure 2.2x10-5 mmHg
Flash point 278.6°F (closed cup) Vapor density 9.3
Specific gravity 1.133 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 1580
Sampling group
Sampler/Sampling media GFF with backup pad (BUP)
Sampling time*
Sampling volume (TWA)*

100 L

Sampling flow rate (TWA)*

1 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments HPLC
Method reference OSHA PV2035 (partially validated)
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 TLV-TWA

1 mg/m³ (inhalable fraction and vapor) [2006]

PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

NA

Skin notation

NA

Skin notation

NA

Skin notation

NA

Notes:

Not established

Notes:

Not established

Notes:

dermal sensitization (DSEN)

Notes:

Not established

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A3 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 12/15/2020