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Hexamethylcyclotrisiloxane

Item number686199
CAS541-05-9
FormulaC6H18O3Si3
Molecular weight222,46 g/mol
Quantity 1X100MG
storage conditions20 °C
CoA / MSDSRetrieve CoA
Retrieve MSDS
Hexamethylcyclotrisiloxane

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Hexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane

686199
541-05-9

1X100MG

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Safety Data Sheetaccording to Regulation (EC) No 1907/2006 (REACH)
Classifications according to Regulation (EC) No 1272/2008.
Printdate 15.01.2025
IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING
Product name:Hexamethylcyclotrisiloxane
Catalog No.:686199
Relevant identified uses of the substance or mixtureIdentified: Laboratory chemical
uses: R&D
Uses advised against:HPC Standards GmbH
Am Wieseneck 7

04451 Cunnersdorf
Deutschland


Tel. +49 34291 3372-36
Fax. +49 34291 3372-39
contact@hpc-standards.com
Emergency telephone numberHPC Standards Tel. +49 34291 3372-36
This number is only available during office hours.
HAZARDS IDENTIFICATION2.1 Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
Flammable solids (Category 1), H228
For the full text of the H-Statements mentioned in this Section, see Section 16.
Label elements
Pictogramflamme
flamme
2.2 Label elements
Labelling according Regulation (EC) No 1272/2008
Pictogram Signal word Danger Hazard statement(s)
H228 Flammable solid.
Precautionary statement(s)
P210 Keep away from heat/sparks/open flames/hot surfaces. No
smoking.
Supplemental Hazard
Statements
none
2.3 Other hazards - none
COMPOSITION/INFORMATION ON INGREDIENTS3.1 Substances
Formula : C6H18O3Si3
Molecular weight : 222,47 g/mol
CAS-No. : 541-05-9
EC-No. : 208-765-4
No components need to be disclosed according to the applicable regulations.
For the full text of the H-Statements mentioned in this Section, see Section 16
FormulaC6H18O3Si3
Molecular Weight (g/mol)222.46
CAS-No.541-05-9
FIRST AID MEASURES4.1 Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration.
Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse
mouth with water. 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
FIRE-FIGHTING MEASURES5.1 Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide 5.2 Special hazards arising from the substance or mixture
Carbon oxides, silicon oxides
5.3 Advice for firefighters
Wear self-contained breathing apparatus for firefighting if necessary.
5.4 Further information
Use water spray to cool unopened containers
ACCIDENTAL RELEASE MEASURES6.1 Personal precautions, protective equipment and emergency procedures
Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation.
Remove all sources of ignition. Evacuate personnel to safe areas.
For personal protection see section 8.
6.2 Environmental precautions
Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
6.3 Methods and materials for containment and cleaning up
Sweep up and shovel. Contain spillage, and then collect with an electrically protected
vacuum cleaner or by wet-brushing and place in container for disposal according to local
regulations (see section 13). Keep in suitable, closed containers for disposal. Contain
spillage, pick up with an electrically protected vacuum cleaner or by wet-brushing and
transfer to a container for disposal according to local regulations (see section 13).
6.4 Reference to other sections
For disposal see section 13
HANDLING AND STORAGE7.1 Precautions for safe handling
Avoid formation of dust and aerosols.
Provide appropriate exhaust ventilation at places where dust is formed.Keep away from
sources of ignition - No smoking.Take measures to prevent the build up of electrostatic
charge.
For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Moisture sensitive. Store under inert gas.
7.3 Specific end use(s)
Apart from the uses mentioned in section 1.2 no other specific uses are stipulated
EXPOSURE CONTROLS/PERSONAL PROTECTION
PHYSICAL AND CHEMICAL PROPERTIES9.1 Information on basic physical and chemical properties
a) Appearance Form: Chunks
Colour: white
b) Odour No data available
c) Odour Threshold No data available
d) pH No data available
e) Melting
point/freezing point
Melting point/range: 60 °C
f) Initial boiling point
and boiling range
134 °C at 1013 hPa
g) Flash point 35 °C - closed cup
h) Evaporation rate No data available
i) Flammability (solid,
gas)
The substance or mixture is a flammable solid with the category
1.
j) Upper/lower
flammability or
explosive limits
No data available k) Vapour pressure 6,71 hPa at 25 °C
l) Vapour density 7,68 - (Air = 1.0)
m) Relative density 1,19 g/cm3 at 25 °C
n) Water solubility 0,0016 g/l at 23 °C - slightly soluble
o) Partition coefficient:
n-octanol/water
No data available
p) Auto-ignition
temperature
659 K
at 1013,0 hPa
q) Decomposition
temperature
No data available
r) Viscosity No data available
s) Explosive properties No data available
t) Oxidizing properties No data available
9.2 Other safety information
Relative vapour
density
7,68 - (Air = 1.0)
STABILITY AND REACTIVITY10.1 Reactivity
No data available
10.2 Chemical stability
Stable under recommended storage conditions.
10.3 Possibility of hazardous reactions
No data available
10.4 Conditions to avoid
Heat, flames and sparks. Extremes of temperature and direct sunlight.
10.5 Incompatible materials
Strong oxidizing agentsStrong oxidizing agents
10.6 Hazardous decomposition products
Hazardous decomposition products formed under fire conditions. - Carbon oxides, silicon
oxides
Other decomposition products - No data available
In the event of fire: see section 5
TOXICOLOGICAL INFORMATION11.1 Information on toxicological effects
Acute toxicity
No data available
Skin corrosion/irritation
No data available
Serious eye damage/eye irritation
No data available Respiratory or skin sensitisation
Maximisation Test - Guinea pig
Result: Does not cause skin sensitisation.
(OECD Test Guideline 406)
Germ cell mutagenicity
Ames test
S. typhimurium
Result: negative
Rat - male
Result: negative
Carcinogenicity
IARC: No component of this product present at levels greater than or equal to 0.1% is
identified as probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
No data available
Specific target organ toxicity - single exposure
No data available
Specific target organ toxicity - repeated exposure
No data available
Aspiration hazard
No data available
Additional Information
Repeated dose toxicity - Rat - male and female - Inhalation
RTECS: Not available
To the best of our knowledge, the chemical, physical, and toxicological properties have not
been thoroughly investigated.
ECOLOGICAL INFORMATION12.1 Toxicity
Toxicity to fish flow-through test LC50 - Oncorhynchus mykiss (rainbow trout) - >
1,6 mg/l - 96 h
Toxicity to daphnia
and other aquatic
invertebrates
flow-through test EC50 - Daphnia magna (Water flea) - > 1,6 mg/l -
48 h
Toxicity to algae static test EC50 - Pseudokirchneriella subcapitata - > 1,6 mg/l - 72
h
(OECD Test Guideline 201)
Toxicity to bacteria Respiration inhibition EC50 - Sludge Treatment - > 100 mg/l - 3 h
(OECD Test Guideline 209)
12.2 Persistence and degradability
Biodegradability aerobic - Exposure time 28 d
Result: 0,06 % - Not biodegradable (OECD Test Guideline 310)
12.3 Bioaccumulative potential
No data available
12.4 Mobility in soil
No data available
12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not
conducted
12.6 Other adverse effects
DISPOSAL CONSIDERATIONS13.1 Waste treatment methods
Product
Burn in a chemical incinerator equipped with an afterburner and scrubber but exert extra
care in igniting as this material is highly flammable. Offer surplus and non-recyclable
solutions to a licensed disposal company.
Contaminated packaging
Dispose of as unused product.
TRANSPORT INFORMATION14.1 UN number
ADR/RID: 1325 IMDG: 1325 IATA: 1325
14.2 UN proper shipping name
ADR/RID: FLAMMABLE SOLID, ORGANIC, N.O.S. (Hexamethylcyclotrisiloxane)
IMDG: FLAMMABLE SOLID, ORGANIC, N.O.S. (Hexamethylcyclotrisiloxane)
IATA: Flammable solid, organic, n.o.s. (Hexamethylcyclotrisiloxane)
14.3 Transport hazard class(es)
ADR/RID: 4.1 IMDG: 4.1 IATA: 4.1
14.4 Packaging group
ADR/RID: II IMDG: II IATA: II
14.5 Environmental hazards
ADR/RID: no IMDG Marine pollutant: no IATA: no
14.6 Special precautions for user
No data available
REGULATORY INFORMATION15.1 Safety, health and environmental regulations/legislation specific for the
substance or mixture
This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006.
15.2 Chemical safety assessment
For this product a chemical safety assessment was not carried out
OTHER INFORMATIONThe above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any
guarantee of the properties of the product. For lab use only!