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Chemdor Official Document
Chemdor Chemicals L.L.C.
Safety Data Sheet (SDS)
According to Globally Harmonized System (GHS)
Product Name: 2-(Trimethylsilyl)ethanethiol
CAS Number: 18143-30-1
Catalog No / SKU: CHA.58355
Document Date: May 25, 2026
SECTION 1: Identification of the substance/mixture and of the company/undertaking
1.1
Product identifiers
Product name
:
CHA.58355
Product
Number
:
CHA.58355
Brand
:
Chemdor Chemicals International L.L.C.
REACH No.
:
A registration number is not available for this substance as the
substance or its uses are exempted from registration or the
annual tonnage does not require a registration.
CAS-No.
:
18143-30-1
1.2
Relevant identified uses of the substance or mixture and uses advised against
Identified uses
:
Laboratory chemicals, Manufacture of substances
1.3
Details of the supplier of the safety data sheet
Company
:
Chemdor Chemicals International L.L.C.
Via Monte Rosa 93
I-20149 MILANO
Telephone
:
+39 02 3341 7340
Fax
:
+39 02 3801 0737
E-mail address
:
serviziotecnico@Chemdorgroup.com
1.4
Emergency telephone number
Emergency Phone #
:
800-789-767 (CHEMTREC Italia)
+39-02-4555-7031 (CHEMTREC chiamate
internazionali)
+39 02-6610-1029 (Centro Antiveleni
Niguarda Ca' Granda - Milano)
SECTION 2: Hazards identification
2.1
Classification of the substance or mixture
Flammable liquids, (Category 3)
H226
:
Flammable liquid and vapour.
Skin irritation, (Category 2)
H315
:
Causes skin irritation.
Eye irritation, (Category 2)
H319
:
Causes serious eye irritation.
Specific target organ toxicity -
H335
:
May cause respiratory irritation.
single exposure, (Category 3),
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Respiratory system
2.2
Label elements
Labelling according Regulation (EC) No 1272/2008
Pictogram
Signal Word Warning
Hazard Statements
H226 Flammable liquid and vapour.
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and
other ignition sources. No smoking.
P302 + P352 IF ON
SKIN
:
Wash with plenty of water.
P305 + P351 + P338 IF IN
EYES
:
Rinse cautiously with water for several minutes.
Remove contact lenses, if present and easy to do. Continue
rinsing.
Supplemental Hazard none
Statements
Reduced Labelling (<= 125 ml)
Pictogram
Signal Word Warning
Hazard Statements none
Precautionary Statements none
Supplemental Hazard none
Statements
2.3
Other hazards
This substance/mixture contains no components considered to be either persistent,
bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at
levels of 0.1% or higher.
SECTION 3: Composition/information on ingredients
3.1
Substances
Formula
:
C H SSi
5 14
Molecular weight
:
134,32 g/mol
CAS-No.
:
18143-30-1
Component Classification Concentration
2-(Trimethylsilyl)-ethanethiol
CAS-No. 18143-30-1 Flam. Liq. 3; Skin Irrit. 2; <= 100 %
Eye Irrit. 2; STOT SE 3;
H226, H315, H319, H335
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For the full text of the H-Statements mentioned in this Section, see
Section 16.
SECTION 4: First aid measures
4.1
Description of first aid measures
General advice
Show this safety data sheet to the doctor in attendance.
If inhaled
After inhalation
:
fresh air.
In case of skin contact
In case of skin contact
:
Take off immediately all contaminated clothing. Rinse skin with
water/ shower.
In case of eye contact
After eye contact
:
rinse out with plenty of water. Call in ophthalmologist. Remove contact
lenses.
If swallowed
After swallowing
:
immediately make victim drink water (two glasses at most). Consult a
physician.
4.2
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see
section 2.2) and/or in section 11
4.3
Indication of any immediate medical attention and special treatment needed
No data available
SECTION 5: Firefighting measures
5.1
Extinguishing media
Unsuitable extinguishing media
For this substance/mixture no limitations of extinguishing agents are given.
5.2
Special hazards arising from the substance or mixture
Carbon oxides
Sulphur oxides
silicon oxides
Vapours are heavier than air and may spread along floors.
Forms explosive mixtures with air at elevated temperatures.
5.3
Advice for firefighters
Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by
keeping a safe distance or by wearing suitable protective clothing.
5.4
Further information
Remove container from danger zone and cool with water. Suppress (knock down)
gases/vapours/mists with a water spray jet. Prevent fire extinguishing water from
contaminating surface water or the ground water system.
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SECTION 6: Accidental release measures
6.1
Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel
:
Do not breathe vapours, aerosols. Avoid substance
contact. Ensure adequate ventilation. Keep away from heat and sources of ignition.
Evacuate the danger area, observe emergency procedures, consult an expert.
For personal protection see
section 8.
6.2
Environmental precautions
Do not let product enter drains. Risk of explosion.
6.3
Methods and materials for containment and cleaning up
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions
(see sections 7 and 10). Take up with liquid-absorbent material (e.g. Chemizorb® ).
Dispose of properly. Clean up affected area.
6.4
Reference to other sections
For disposal see
section 13.
SECTION 7: Handling and storage
7.1
Precautions for safe handling
Advice on protection against fire and explosion
Keep away from open flames, hot surfaces and sources of ignition.Take precautionary
measures against static discharge.
Hygiene measures
Immediately change contaminated clothing. Apply preventive skin protection. Wash hands
and face after working with substance.
For precautions see
section 2.2.
7.2
Conditions for safe storage, including any incompatibilities
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Keep away from heat and
sources of ignition.
Storage stabilityRecommended storage temperature
2 - 8 °C
Storage class
Storage class (TRGS 510)
:
3: Flammable liquids
7.3
Specific end use(s)
Apart from the uses mentioned in
section 1.2 no other specific uses are stipulated
SECTION 8: Exposure controls/personal protection
8.1
Control parameters
Ingredients with workplace control parameters
8.2
Exposure controls
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate
government standards such as NIOSH (US) or EN 166(EU). Safety glasses
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Skin protection
required
Body Protection
Flame retardant antistatic protective clothing.
Respiratory protection
required when vapours/aerosols are generated.
Our recommendations on filtering respiratory protection are based on the following
standards
:
DIN EN 143, DIN 14387 and other accompanying standards relating to
the used respiratory protection system.
Recommended Filter type
:
Filter type ABEK
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory
protective devices are carried out according to the instructions of the producer.
These measures have to be properly documented.
Control of environmental exposure
Do not let product enter drains. Risk of explosion.
SECTION 9: Physical and chemical properties
9.1
Information on basic physical and chemical properties
a) Physical state liquid
b) Color colourless
c) Odor No data available
d) Melting No data available
point/freezing point
e) Initial boiling point 144 - 146 °C
and boiling range 62 - 63 °C at 57 hPa
f) Flammability (solid, No data available
gas)
g) Upper/lower No data available
flammability or
explosive limits
h) Flash point 49 °C - closed cup
i) Autoignition No data available
temperature
j) Decomposition No data available
temperature
k) pH No data available
l) Viscosity Viscosity, kinematic
:
No data available
Viscosity, dynamic
:
No data available
m) Water solubility No data available
n) Partition coefficient
:
No data available
n-octanol/water
o) Vapor pressure No data available
p) Density 0,839 g/mL at 25 °C
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Relative density No data available
q) Relative vapour No data available
density
r) Particle No data available
characteristics
s) Explosive properties No data available
t) Oxidizing properties No data available
9.2
Other safety information
No data available
SECTION 10: Stability and reactivity
10.1
Reactivity
Vapour/air-mixtures are explosive at intense warming.
10.2
Chemical stability
The product is chemically stable under standard ambient conditions (room temperature) .
10.3
Possibility of hazardous reactions
No data available
10.4
Conditions to avoid
Heating.
10.5
Incompatible materials
Strong oxidizing agents
10.6
Hazardous decomposition products
In the event of fire
:
see section 5
SECTION 11: Toxicological information
11.1
Information on toxicological effects
Acute toxicity
Oral
:
No data available
Inhalation
:
No data available
Dermal
:
No data available
LD50 Intraperitoneal - Mouse - 2.500 mg/kg
Skin corrosion/irritation
Remarks
:
No data available
Serious eye damage/eye irritation
Remarks
:
No data available
Respiratory or skin sensitization
No data available
Germ cell mutagenicity
No data available
Carcinogenicity
No data available
Reproductive toxicity
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No data available
Specific target organ toxicity - single exposure
Inhalation - May cause respiratory irritation.
Specific target organ toxicity - repeated exposure
No data available
Aspiration hazard
No data available
11.2
Additional Information
RTECS
:
KJ2621000
Nausea, Headache, Vomiting, To the best of our knowledge, the chemical, physical, and
toxicological properties have not been thoroughly investigated.
SECTION 12: Ecological information
12.1
Toxicity
No data available
12.2
Persistence and degradability
No data available
12.3
Bioaccumulative potential
No data available
12.4
Mobility in soil
No data available
12.5
Results of PBT and vPvB assessment
This substance/mixture contains no components considered to be either persistent,
bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at
levels of 0.1% or higher.
12.6
Endocrine disrupting properties
No data available
12.7
Other adverse effects
No data available
SECTION 13: Disposal considerations
13.1
Waste treatment methods
No data available
SECTION 14: Transport information
14.1
UN number
ADR/RID
:
1993
IMDG
:
1993
IATA
:
1993
14.2
UN proper shipping name
ADR/RID
:
FLAMMABLE LIQUID, N.O.S. (2-(Trimethylsilyl)-ethanethiol)
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IMDG
:
FLAMMABLE LIQUID, N.O.S. (2-(Trimethylsilyl)-ethanethiol)
IATA
:
Flammable liquid, n.o.s. (2-(Trimethylsilyl)-ethanethiol)
14.3
Transport hazard class(es)
ADR/RID
:
3
IMDG
:
3
IATA
:
3
14.4
Packaging group
ADR/RID
:
III
IMDG
:
III
IATA
:
III
14.5
Environmental hazards
ADR/RID
:
no IMDG Marine pollutant: no
IATA
:
no
14.6
Special precautions for user
Tunnel restriction code
:
(D/E)
Further information
:
No data available
14.7
Maritime transport in bulk according to IMO instruments
Not applicable for product as supplied.
SECTION 15: Regulatory information
15.1
Safety, health and environmental regulations/legislation specific for the
substance or mixture
This material safety data sheet complies with the requirements of Regulation (EC) No.
1907/2006.
National legislation
Seveso
III
:
Directive 2012/18/EU of the P5c FLAMMABLE LIQUIDS
European Parliament and of the Council
on the control of major-accident hazards
involving dangerous substances.
Other regulations
Take note of Dir 94/33/EC on the protection of young people at work.
15.2
Chemical safety assessment
For this product a chemical safety assessment was not carried out
SECTION 16: Other information
Full text of H-Statements
H226 Flammable liquid and vapour.
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
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Full text of other abbreviations
ADN - European Agreement concerning the International Carriage of Dangerous Goods
by Inland Waterways; ADR - Agreement concerning the International Carriage of
Dangerous Goods by Road; AIIC - Australian Inventory of Industrial Chemicals; ASTM -
American Society for the Testing of Materials; bw - Body weight; CMR - Carcinogen,
Mutagen or Reproductive Toxicant; DIN - Standard of the German Institute for
Standardisation; DSL - Domestic Substances List (Canada); ECx - Concentration
associated with x% response; ELx - Loading rate associated with x% response; EmS -
Emergency Schedule; ENCS - Existing and New Chemical Substances (Japan); ErCx -
Concentration associated with x% growth rate response; GHS - Globally Harmonised
System; GLP - Good Laboratory Practice; IARC - International Agency for Research on
Cancer; IATA - International Air Transport Association; IBC - International Code for the
Construction and Equipment of Ships carrying Dangerous Chemicals in Bulk; IC50 - Half
maximal inhibitory concentration; ICAO - International Civil Aviation Organization;
IECSC - Inventory of Existing Chemical Substances in China; IMDG - International
Maritime Dangerous Goods; IMO - International Maritime Organisation; ISHL - Industrial
Safety and Health Law (Japan); ISO - International Organisation for Standardisation;
KECI - Korea Existing Chemicals Inventory; LC50 - Lethal Concentration to 50 % of a
test population; LD50 - Lethal Dose to 50% of a test population (Median Lethal Dose);
MARPOL - International Convention for the Prevention of Pollution from Ships; n.o.s. -
Not Otherwise Specified; NO(A)EC - No Observed (Adverse) Effect Concentration;
NO(A)EL - No Observed (Adverse) Effect Level; NOELR - No Observable Effect Loading
Rate; NZIoC - New Zealand Inventory of Chemicals; OECD - Organisation for Economic
Co-operation and Development; OPPTS - Office of Chemical Safety and Pollution
Prevention; PBT - Persistent, Bioaccumulative and Toxic substance; PICCS - Philippines
Inventory of Chemicals and Chemical Substances; (Q)SAR - (Quantitative) Structure
Activity Relationship; REACH - Regulation (EC) No 1907/2006 of the European
Parliament and of the Council concerning the Registration, Evaluation, Authorisation and
Restriction of Chemicals; RID - Regulations concerning the International Carriage of
Dangerous Goods by Rail; SADT - Self-Accelerating Decomposition Temperature; SDS -
Safety Data Sheet; TCSI - Taiwan Chemical Substance Inventory; TECI - Thailand
Existing Chemicals Inventory; TSCA - Toxic Substances Control Act (United States); UN
- United Nations; UNRTDG - United Nations Recommendations on the Transport of
Dangerous Goods; vPvB - Very Persistent and Very Bioaccumulative
Further information
The information is believed to be correct but is not exhaustive and will be used solely as
a guideline, which is based on current knowledge of the chemical substance or mixture
and is applicable to appropriate safety precautions for the product. It does not represent
any guarantee of the properties of the product. Chemdor Corporation and its
Affiliates shall not be held liable for any damage resulting from handling or from contact
with the above product. See www.Chemdor.com and/or the reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2025 Chemdor Co. LLC. License granted to make unlimited paper copies
for internal use only.
The branding on the header and/or footer of this document may temporarily not visually match
the product purchased as we transition our branding. However, all of the information in the
document regarding the product remains unchanged and matches the product ordered. For
further information please contact info@chemdor.com.
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Chemdor Chemicals International L.L.C. shall not be held liable for any damage resulting from handling or from contact with the above product.
See www.chemdor.com for additional terms and conditions of sale.