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Safety Data Sheet EN

Octamethylcyclotetrasiloxane

CAS 556-67-2
EC 209-136-7

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Octamethylcyclotetrasiloxane
Product Code
69184
Chemical Name
octamethylcyclotetrasiloxaan [D4]

Regulatory Identifiers

CAS Number
556-67-2 Check regulations →
EC Number
209-136-7 Check regulations →

Identified Uses

SU24 Scientific research and development

Manufacturers & Suppliers

Alfa Aesar Thermo Fisher Scientific Chemicals, Inc. logo

Alfa Aesar Thermo Fisher Scientific Chemicals, Inc.

manufacturer

30 Bond Street, Ward Hill, MA 01835-8099

800-343-0660

http://www.alfa.com

Emergency Contacts

Emergency Contact

(800) 343-0660

Monday-Friday, 8am-7pm EST

Carechem 24

(866) 928-0789

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified warning

Hazard Classifications

Flam. Liq. Cat. 3 H226
Repr. Cat. 2 H361

GHS Pictograms

GHS02 - Flammable

GHS02

GHS08 - Serious health hazard

GHS08

Hazard Statements

H226 Flammable liquid and vapour.
H361 Suspected of damaging fertility or the unborn child.

Precautionary Statements

P201 Obtain special instructions before use.
P210 Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/equipment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P281 Use personal protective equipment as required.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P403+P235 Store in a well-ventilated place. Keep cool.
P405 Store locked up.
P501 Dispose of contents/container in accordance with local/regional/national/international regulations.

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type substance

Substances

Chemical Name CAS Number Concentration Hazardous
octamethylcyclotetrasiloxaan [D4] EC: 209-136-7 556-67-2 --- No
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Supply fresh air. If required, provide artificial respiration. Keep patient warm.

Skin contact

Immediately wash with water and soap and rinse thoroughly.

Eye contact

Rinse opened eye for several minutes under running water. Then consult a doctor.

Ingestion

Seek medical treatment.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

The data for this section has not been processed yet.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

The data for this section has not been processed yet.

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

The data for this section has not been processed yet.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.

Hands

Impervious gloves. Check protective gloves prior to each use for their proper condition. The selection of suitable gloves not only depends on the material, but also on quality. Quality will vary from manufacturer to manufacturer. Material of gloves Nitrile rubber, NBR. Penetration time of glove material (in minutes) 480. Glove thickness 0.4 mm.

Eyes

Safety glasses

Respiratory

Use suitable respirator when high concentrations are present. Recommended filter device for short term use: Use a respirator with multi-purpose combination (US) or type ABEK (EN 14387) as a backup to engineering controls. Risk assessment should be performed to determine if air-purifying respirators are appropriate. Only use equipment tested and approved under appropriate government standards such as NIOSH (USA) or CEN (EU).

Skin/Body

Protective work clothing.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Melting Point
17-18 ℃ (63-64 °F)
Properties Status
---
Solubility
---
Evaporation Rate
Not determined.
Dynamic Viscosity
Not determined.
Kinematic Viscosity
Not determined.
Lower Explosive Limit
Not determined
Physical State
Liquid
Colour
Colorless
Solidification Point
---
Decomposition Temperature
Not determined
Vapor Pressure
Not determined
Relative Evaporation Rate
---
Freezing Point
---
Molecular Weight
---
Odor Threshold
Not determined.
Upper Explosive Limit
Not determined
Metal Corrosion
---
State Under Standard Conditions
---
Voc Content
---
Partition Coefficient
Not determined.
Odor
Not determined
Flash Point
56 °℃ (133 ºF)
Ph
Not determined.
Softening Point
---
Colour Intensity
---
Flammability
Not determined.
Density
0.956 g/cm3 (7.978 lbs/gal)
Solubility In Fat
---
Cloud Point
---
Vapor Density
Not determined.
Relative Density
Not determined.
Form
Liquid
Bulk Density
---
Explosive Limits
---
Physical State Data
liquid
Auto Ignition Temperature
Not determined.
Solubility In Water
Not determined
Boiling Point
175-176 ℃ (347-349 °F)
Crystallisation Point
---
Appearance
Colorless
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

The data for this section has not been processed yet.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

The data for this section has not been processed yet.

13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

The data for this section has not been processed yet.

14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
UN1993
Shipping Name
Flammable liquids, n.o.s. (Octamethylcyclotetrasiloxane)
Transport Class
3
Packing Group
III
IMDG

EMS Number: F-E,S-È

IATA

EMS Number: F-E,S-È

15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

The data for this section has not been processed yet.

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Frequently Asked Questions

Common questions about safety, handling, and properties

What is the hazard signal word for Octamethylcyclotetrasiloxane?

The signal word is warning.

What is the physical form of Octamethylcyclotetrasiloxane?

Octamethylcyclotetrasiloxane is a liquid appearing as colorless with colorless color. It has not determined odor.

What is Octamethylcyclotetrasiloxane used for?

SU24 Scientific research and development

What are the hazard statements for Octamethylcyclotetrasiloxane?

This substance has 2 hazard statements:

  • H226: Flammable liquid and vapour.
  • H361: Suspected of damaging fertility or the unborn child.

What is the melting point of Octamethylcyclotetrasiloxane?

The melting point is 17-18 ℃ (63-64 °F) and the boiling point is 175-176 ℃ (347-349 °F).

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