4-Methylthio-4-methyl-2-pentanone / P2OASys / Media

Name

4-Methylthio-4-methyl-2-pentanone

CAS

23550-40-4

SDS Source

Sigma Aldrich

SDS Source URL

https://www.sigmaaldrich.com/US/en/sds/ALDRICH/W337609?msockid=00b66f33fde36e0d1b807ae2fc6c6f76

SDS Date Year

2025

Assessment Information

Submitted by TURI staff for HSPiP chemical assessments

Uploaded By Email

Environmental Certification

Validated

Yes

Entries

69

Overall Score

5.40

Acute Human Effects Score

4

Chronic Human Effects Score

5

Ecological Hazards Score

2

Environmental Fate & Transport Score

8

Atmospheric Hazard Score

5

Physical Properties Score

6

Process Factors Score

6

Life Cycle Factors Score

7

Unit Data

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LC50 ppm

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Vapor GHS Category Level

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mg/l gas/vapor

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mg/l dust/mist/fume

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Solid GHS Category Level

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LD50 mg/kg

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GHS Category Level

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LD50 mg/kg

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GHS Category Level

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GHS Category Level

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GHS H Phrases

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GHS Category Level

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PEL/TLV ppm

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PEL/TLV (dusts/particles) mg/m3

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ppm

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NFPA/HMIS 0,1,2,3,4

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IARC Category

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EPA CLASS Category

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ACGIH Category

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OSHA Category

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GHS H Phrases

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GHS Category

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Prop 65 Category

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GHS Category

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GHS Category

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Prop 65 Category

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GHS Category - STOT - Single Exposure

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GHS Category - STOT - Repeated Exposure

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Asthmagen Type (AOEC Database)

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GHS H Phrase

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GHS Category

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EU - Priority Endocrine Disruptor

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EU - SVHC

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ChemSec - SIN

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OSPAR

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TEDX

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Key Phrases

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Key Phrases

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GHS H-Phrase - Single Exposure

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GHS Category - STOT -Single Exposure

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GHS H-Phrase - Repeated Exposure

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GHS Category - STOT - Repeated Exposure

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Acute Fish LC50 (mg/l)

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Acute Algae (or other aquatic plant) EC50 (mg/l)

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GHS H Phrases

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GHS Category level

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NOEC (NOAEC) or ECx (mg/l)

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ChV mg/l

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GHS Category

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mg/l

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GHS Category level

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Water t1/2 Days

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Water Signal Words

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Air t1/2 Days

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Air Signal Words

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Soil/Sediment t1/2 Days

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Soil/Sediment Signal Words

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Key Phrases

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28-day Study: % Breakdown Dissolved Organic Carbon

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28-day Study: % Based on O2 or CO2

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BOD Half-life (days)

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Hydrolysis Half-life (days)

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Key Phrases

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Log Kow / Pow

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BAF/BCF (l/kg)

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On Canada EPA Domestic Substances List

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Key Phrases

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GWP Relative to CO2

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Y/N

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ODP Units

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GHS H Phrase

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Ozone Classification

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Y/N

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Key Phrases

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Y/N

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Key Phrases

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mm Hg

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NFPA/HMIS 0,1,2,3,4

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GHS H Phrase

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GHS Category level

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deg C

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GHS H Phrase

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GHS Category Level

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NFPA/HMIS 0,1,2,3,4

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pH Units

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GHS Category Level

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g/l

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WBGT, deg C

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dBA/hr

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Class 1 Small Machine (mm/s)

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Class 2 Medium Machine (mm/s)

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Class 3 Large Rigid Foundation (mm/s)

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Class 4 Large Soft Foundation (mm/s)

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Occurence

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Hazard Level

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Work Overload and Pace: Work Load

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Work Overload and Pace: Machine Pacing

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Work Overload and Pace: Time Constraints

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Work Schedule: Shift Work

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Work Schedule: Work Isolation

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Control

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Work Environment and Equipment: Equipment Stability

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Work Environment and Equipment: Work Space

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Pressure (Delta % Change From Ambient)

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Temperature (Delta % Change From Ambient)

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% Water Change

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Reuse

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% Energy Change

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% Renewable Energy

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Occurence: Near Certain

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Occurence: Highly Likely

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Occurence: Likely

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Occurence: Unlikely

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Occurence: Remote

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Key Phrases

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Pounds

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% Recyclable at End of Life

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Key Words

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Default object view. Click to create a custom template, Node ID: 39054, Object ID: 60794

4-Methylthio-4-methyl-2-pentanone