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Octamethylcyclotetrasiloxane

Item number	690286
CAS	556-67-2
Formula	C8H24O4Si4
Molecular weight	296,62 g/mol
Quantity	1X500MG
storage conditions	20 °C
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Safety Data Sheet	according to Regulation (EC) No 1907/2006 (REACH) Classifications according to Regulation (EC) No 1272/2008. Printdate 19.04.2024
IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING
Product name:	Octamethylcyclotetrasiloxane
Catalog No.:	690286
Relevant identified uses of the substance or mixture	Identified: 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 number	HPC Standards Tel. +49 34291 3372-36 This number is only available during office hours.
HAZARDS IDENTIFICATION	2.1 Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 Flammable liquids (Category 3), H226 Reproductive toxicity (Category 2), H361f Long-term (chronic) aquatic hazard (Category 4), H413
Label elements
Pictogram	flamme flamme GHS08 silhouete silhouete
	2.2 Label elements Labelling according Regulation (EC) No 1272/2008 Pictogram Signal word Warning Hazard statement(s) H226 Flammable liquid and vapour. H361f Suspected of damaging fertility. H413 May cause long lasting harmful effects to aquatic life. Precautionary statement(s) P201 Obtain special instructions before use. P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P273 Avoid release to the environment. P308 + P313 IF exposed or concerned: Get medical advice/ attention. Supplemental Hazard Statements none 2.3 Other hazards This substance/mixture contains components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB).
COMPOSITION/INFORMATION ON INGREDIENTS	3.1 Substances Formula : C8H24O4Si4 Molecular weight : 296,62 g/mol CAS-No. : 556-67-2 EC-No. : 209-136-7 Index-No. : 014-018-00-1 Component Classification Concentration Octamethylcyclotetrasiloxane Included in the Candidate List of Substances of Very High Concern (SVHC) according to Regulation (EC) No. 1907/2006 (REACH) Flam. Liq. 3; Repr. 2; Aquatic Chronic 4; H226, H361f, H413 <= 100 %
Formula	C8H24O4Si4
Molecular Weight (g/mol)	296.62
CAS-No.	556-67-2
FIRST AID MEASURES	4.1 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 MEASURES	5.1 Extinguishing media Suitable extinguishing media Dry powder Dry sand Unsuitable extinguishing media Do NOT use water jet. 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 MEASURES	6.1 Personal precautions, protective equipment and emergency procedures Use personal protective equipment. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Evacuate personnel to safe areas. Beware of vapours accumulating to form explosive concentrations. Vapours can accumulate in low 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. Discharge into the environment must be avoided. 6.3 Methods and materials for containment and cleaning up Contain spillage, and then collect with non-combustible absorbent material, (e.g. sand, earth, diatomaceous earth, vermiculite) and place in container for disposal according to local / national regulations (see section 13). 6.4 Reference to other sections For disposal see section 13.
HANDLING AND STORAGE	7.1 Precautions for safe handling Avoid contact with skin and eyes. Avoid inhalation of vapour or mist. 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 Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Store in cool place. 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 PROPERTIES	9.1 Information on basic physical and chemical properties a) Appearance Form: liquid Colour: colourless b) Odour weak c) Odour Threshold No data available d) pH No data available e) Melting point/freezing point Melting point/range: 17 - 18 °C - lit. f) Initial boiling point and boiling range 176 °C at 1.013 hPa g) Flash point 51 °C - closed cup - DIN 51755 Part 1 h) Evaporation rate No data available i) Flammability (solid, gas) No data available j) Upper/lower flammability or explosive limits Upper explosion limit: 11,7 %(V) 19,5 %(V) at 1010 hPa Lower explosion limit: 0,4 %(V)0,61 %(V) at 1010 hPa k) Vapour pressure 1,3 hPa at 20 °C l) Vapour density No data available m) Relative density 0,95 g/cm3 at 25 °C n) Water solubility 0,001 g/l at 25 °C - Hydrolysis o) Partition coefficient: n-octanol/water log Pow: 6,488 at 25,1 °C - Potential bioaccumulation p) Auto-ignition temperature 384 - 387 °C at 1.013 hPa - ASTM E-659 q) Decomposition temperature 313 °C - r) Viscosity 1,6 mm2/s at 20 °C - (calculated), (ECHA) s) Explosive properties No data available t) Oxidizing properties No data available 9.2 Other safety information No data available
STABILITY AND REACTIVITY	10.1 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. 10.5 Incompatible materials No data available 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 INFORMATION	11.1 Information on toxicological effects Acute toxicity LD50 Oral - Rat - > 2.000 mg/kg Remarks: (IUCLID) LD50 Oral - Rat - male - > 4.800 mg/kg (OECD Test Guideline 401) LC50 Inhalation - Rat - male and female - 4 h - 36 mg/l (OECD Test Guideline 403) LD50 Dermal - Rat - male and female - > 2.400 mg/kg (OECD Test Guideline 402) Remarks: (IUCLID) Skin corrosion/irritation Skin - Rabbit Result: No skin irritation - 24 h (OECD Test Guideline 404) Serious eye damage/eye irritation Eyes - Rabbit Result: No eye irritation (OECD Test Guideline 405) Respiratory or skin sensitisation Patch test: - Human Result: negative Remarks: (IUCLID) Maximisation Test - Guinea pig Result: Does not cause skin sensitisation. (OECD Test Guideline 406) Germ cell mutagenicity Mutagenicity (mammal cell test): chromosome aberration. Result: negative Ames test Salmonella typhimurium Result: negative In vitro mammalian cell gene mutation test Mouse lymphoma test Result: negative OECD Test Guideline 475 Rat - male and female Result: negative OECD Test Guideline 478 Rat - male and female 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 Suspected of damaging fertility. Specific target organ toxicity - single exposure Specific target organ toxicity - repeated exposure Aspiration hazard Additional Information Repeated dose toxicity - Rabbit - male and female - Dermal - 21 d - No observed adverse effect level - >= 960 mg/kg RTECS: GZ4397000 To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. We have no description of any toxic symptoms. Handle in accordance with good industrial hygiene and safety practice
ECOLOGICAL INFORMATION	12.1 Toxicity 12.2 Persistence and degradability Biodegradability aerobic - Exposure time 10 d (OECD Test Guideline 310) Remarks: Not readily biodegradable. 12.3 Bioaccumulative potential 12.4 Mobility in soil 12.5 Results of PBT and vPvB assessment This substance/mixture contains components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB). 12.6 Other adverse effects Discharge into the environment must be avoided. Stability in water Remarks: Hydrolysis
DISPOSAL CONSIDERATIONS	13.1 Waste treatment methods Product Offer surplus and non-recyclable solutions to a licensed disposal company. Waste material must be disposed of in accordance with the Directive on waste 2008/98/EC as well as other national and local regulations. Leave chemicals in original containers. No mixing with other waste. Handle uncleaned containers like the product itself. Contaminated packaging Dispose of as unused product.
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. (Octamethylcyclotetrasiloxane) IMDG: FLAMMABLE LIQUID, N.O.S. (Octamethylcyclotetrasiloxane) IATA: Flammable liquid, n.o.s. (Octamethylcyclotetrasiloxane) 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 No data available
REGULATORY INFORMATION	15.1 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. Authorisations and/or restrictions on use REACH - Candidate List of Substances of Very High Concern for Authorisation (Article 59). : Octamethylcyclotetrasiloxane REACH - Restrictions on the manufacture, placing on the market and use of certain dangerous substances, preparations and articles (Annex XVII) : REACH - Restrictions on the manufacture, placing on the market and use of certain dangerous substances, preparations and articles (Annex XVII) : REACH - Restrictions on the manufacture, placing on the market and use of certain dangerous substances, preparations and articles (Annex XVII) : Octamethylcyclotetrasiloxane 15.2 Chemical safety assessment For this product a chemical safety assessment was not carried out
OTHER INFORMATION	The 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!