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2-Methyl-2-heptanethiol

HCID 69810
NotesReactions
Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
Substructure searchFind similar structures

Basic information

CAS
763-20-2
Standard SMILES
CCCCCC(C)(C)S
InChIKey
KSTAKRCVPORMCA-UHFFFAOYSA-N
Molecular formula
C8H18S
Average molar mass
146.3 g/mol
Monoisotopic mass
146.11292175

Overview

2-methyl-2-heptanethiol appears as a straw-colored liquid with a strong, obnoxious odor. Lethal by inhalation of even small amounts of vapor. Lethal by skin absorption. Skin and eye irritant. Decomposes at high temperatures to form toxic sulfur oxides and flammable hydrogen sulfide. Less dense than water. Used as a lubricant additive and in polymer modification.

Names & identifiers

Preferred name
2-Methyl-2-heptanethiol
IUPAC
2-methylheptane-2-thiol
English name
2-methylheptane-2-thiol
Molecular formula
C8H18S
Molecular weight
146.29

Names & synonyms

2-Methyl-2-heptanethiol2-Heptanethiol, 2-methyl-763-20-22-Methyl-2-heptylmercaptanDTXSID90752902-METHYL-2-HEPTYL MERCAPTAN2Methyl2heptylmercaptan2Heptanethiol, 2methylRefChem:475165DTXCID60478662-methylheptane-2-thiol2-Heptanethiol,2-methyl-
Show more names
1,1-Dimethyl-1-hexanethiol1,1-Dimethylhexyl thioalcohol
SWR39B4RNKUNII-SWR39B4RNK2-Methyl-2-heptanethiol [UN3023] [Poison]SCHEMBL316016SCHEMBL367042SCHEMBL33392671,1-Dimethylhexyl hydrosulfide #Q19903065

Database identifiers

CAS
763-20-2
PubChem CID
69810
DTXSID
DTXSID9075290
UNII
SWR39B4RNK
Nikkaji
J121.764J

Properties

Computed structural properties

XLogP
3.5
Topological polar surface area
1 Ų
Hydrogen bond donors
1
Hydrogen bond acceptors
1
Rotatable bonds
4
Heavy atoms
9
Formal charge
0
Complexity
67

Experimental & physicochemical properties

Chemical ClassesToxic Gases & Vapors -> Other Toxic Gases & Vapors
Flash Point115 °F [CAMEO]
Physical Description · 2 items

2-methyl-2-heptanethiol appears as a straw-colored liquid with a strong, obnoxious odor. Lethal by inhalation of even small amounts of vapor. Lethal by skin absorption. Skin and eye irritant. Decomposes at high temperatures to form toxic sulfur oxides and flammable hydrogen sulfide. Less dense than water. Used as a lubricant additive and in polymer modification.

Yellow liquid with an obnoxious odor; [CAMEO]

Physicochemical properties

Melting point
-70.34 °C · -70.34°C (estimate)
Boiling point
195.97 °C · 195.97°C (estimate)
Density
0.8489 · 0.8489 (estimate)
refractive index
1.4371 · 1.4371 (estimate)
pka
11.42 · 11.42±0.10(Predicted)
FDA UNII
39 B4RNK · SWR39B4RNK

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

Hazard information

Hazards IdentificationToxic/poison by inhalation (TIH/PIH)
DOT LabelPoison Inhalation Hazard Flammable Liquid
Fire Hazards · 2 items

Excerpt from ERG Guide 131 [Flammable Liquids - Toxic]:

· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Health Hazards · 2 items

Excerpt from ERG Guide 131 [Flammable Liquids - Toxic]:

· TOXIC; may be fatal if inhaled, ingested or absorbed through skin.

Hazards SummaryHighly toxic by inhalation or skin absorption; Irritating to the skin and eyes; Decomposes in heat to release sulfur oxides and flammable hydrogen sulfide; [CAMEO] See THIOLS.
DOT ID and Guide3023 131
Reactive GroupSulfides, Organic
Reactivity Profile · 1 item

Organosulfides, such as 2-METHYL-2-HEPTANETHIOL, are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid.

DOT Hazard Classification · 5 items

2-Methyl-2-heptanethiol

UN3023

Div 6.1 Poisonous materials (49 eCFR § 173.132)

Div 6.1 Poisonous materials (49 eCFR § 173.132)

PG I: the degree of danger presented by the material is great

Air and Water Reactions

Chemistry & industry

Uses & manufacturing

UsesUsed as a lubricant additive and a polymer modifier; [CAMEO]
Applications · 1 item

General DescriptionA straw-colored liquid with a strong, obnoxious odor. Lethal by inhalation of even small amounts of vapor. Lethal by skin absorption. Skin and eye irritant. Decomposes at high temperatures to form toxic sulfur oxides and flammable hydrogen sulfide. Less dense than water. Flash point 115°F. Used as a lubricant additive and in polymer modification.

Suppliers2 total

天津诺康医药科技有限公司022-23989838 13810451150 · [email protected]
DAYANG CHEM (HANGZHOU) CO.,LTD+86-88938639 +86-17705817739 · [email protected]

Related reactions

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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
EPA Substance Registry System
2 · 2-Heptanethiol, 2-methyl- (763-20-2)
RIDADR
3023 · UN 3023
HazardClass
6.1 · 6.1
PackingGroup
I
Flammable.

Safety & protection

Fire FightingExcerpt from ERG Guide 131 [Flammable Liquids - Toxic]:
Accidental Release Measures · 2 items

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

First Aid · 2 items

Excerpt from ERG Guide 131 [Flammable Liquids - Toxic]:

General First Aid:

Exposure Control and Personal Protection · 2 items

· Wear positive pressure self-contained breathing apparatus (SCBA).

TIH (Toxic Inhalation Hazard) - Term used to describe gases and volatile liquids that are toxic when inhaled. Some are TIH materials themselves, e.g., chlorine, and some release TIH gases when spilled in water, e.g., chlorosilanes. [ERG 2016].

Nonfire Spill ResponseExcerpt from ERG Guide 131 [Flammable Liquids - Toxic]:
Isolation and Evacuation · 4 items

Excerpt from ERG Guide 131 [Flammable Liquids - Toxic]:

Immediate precautionary measure

Small spill:

Small spill:

Personal Protective Equipment (PPE)Excerpt from ERG Guide 131 [Flammable Liquids - Toxic]:
Emergency Response Planning GuidelinesCAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient.

Toxicology

Adverse EffectsOther Poison - Chemical Asphyxiant

Safety data

ridadr
UN 3023
hazard_class
6.1
packing_group
I