Sylgard™ 184 Silicone Elastomer Kit - Base

1. Identification

Product Identifiers

Product Name

Sylgard 184 Silicone Elastomer Kit - Base

Other Names

N/A

Product Number(s)

24236-10A; EMS24236-10A

CAS Number

N/A

Recommended use of the chemical and restriction on use

Company Details

Emergency Contact Details

2. Hazards Identification

Classification of the substance or mixture

Label Elements

Signal Words

Warning

Hazard Statement(s)

• H302 Harmful if swallowed
• H316: Causes mild skin irritation
• H319 Causes serious eye irritation.
• H332 Harmful if inhaled
• H335 May cause respiratory irritation.

Precautionary Statement(s)

• P201 Obtain special instructions before use.
• P202 Do not handle until all safety precautions have been read and understood.
• P261: Avoid breathing dust/fume/gas/mist/vapours/spray
• P264 Wash ... thoroughly after handling.
• P270 Do not eat, drink or smoke when using this product.
• P271 Use only outdoors or in a well-ventilated area.
• P280: Wear protective gloves/eye protection/face protection
• P301±P312 IF SWALLOWED: call a POISON CENTER/doctor/... IF you feel unwell.
• P330 Rinse mouth.
• P303±P361±P353 IF ON SKIN (or hair): Take off Immediately all contaminated clothing. Rinse SKIN with water [or shower].
• P363 Wash contaminated clothing before reuse.
• P302±P352 IF ON SKIN: wash with plenty of water.
• P304±P340: If Inhaled. remove person to fresh air and keep comfortable for breathing
• P305±P351±P338 If in eyes: Rince cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P332±P313 IF SKIN irritation occurs: Get medical advice/attention.
• P337±P313 IF eye irritation persists: Get medical advice/attention.
• P405 Store locked up.
• P308±P313 IF exposed or concerned: Get medical advice/attention.
• P501: Dispose of contents/container in accordance with local regional/national/international regulations.
• P403±P233 Store in a well-ventilated place. Keep container tightly closed.

Primary route(s) of entry

Human Health

Inhalation

May cause respiratory irritation.

Ingestion

Harmful if swallowed or if inhaled

Eyes

Causes serious eye irritation.

Skin

Causes mild skin irritation

Environment

3. Composition / Information on Ingredients

4. First Aid Measures

Ingestion

If symptoms persist consult doctor

Inhalation

In case of unconsciousness place patient stably in side position for transportation

Skin Contact

Immediately wash with water and soap and rinse thoroughly.

Eye Contact

Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor

Other Information

No further relevant information available

5. Firefighting Measures

Suitable extinguishing equipment

Fire

Use fire fighting measures that suit the environment

HAZCHEM

No further relevant information available

Special protective equipment and precautions for fire fighters

6. Accidental Release Measures

Personal precautions, protective equipment and emergency procedures

Not required.

Environmental precautions

Do not allow to enter sewers/ surface or ground water

Methods and materials for containment and clean up

• Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust).
• Ensure adequate ventilation
• PAC-1:
• 68083-19-2 Poly(dimethylsiloxane), vinyl terminated 48 mg/m³
• 100-41-4 ethylbenzene 33 ppm
• PAC-2:
• 68083-19-2 Poly(dimethylsiloxane), vinyl terminated 530 mg/m³
• 100-41-4 ethylbenzene 1100* ppm
• PAC-3:
• 68083-19-2 Poly(dimethylsiloxane), vinyl terminated 3,200 mg/m³
• 100-41-4 ethylbenzene 1800* ppm

7. Handling and Storage

Precautions for safe handling

• Ensure good ventilation/exhaustion at the workplace.
• Prevent formation of aerosols.

Conditions for safe storage

Keep receptacle tightly sealed.

8. Exposure Controls / Personal Protection

Exposure Standards

Engineering controls

• Ingredients with biological limit values:
• 100-41-4 ethylbenzene
• BEI 0.7 g/g creatinine
• Medium: urine
• Time: end of shift at end of workweek
• Parameter: Sum of mandelic acid and phenylglyoxylic acid (nonspecific, semi-quantitative)
• Medium: end-exhaled air
• Time: not critical
• Parameter: Ethyl benzene (semi-quantitative)
• * Keep away from foodstuffs, beverages and feed.
• * Immediately remove all soiled and contaminated clothing.
• * Wash hands before breaks and at the end of work.
• * Avoid contact with the eyes and skin.

Personal protective equipment

Eye and face protection

Tightly sealed goggles

Skin protection

Protective gloves. The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.

Body protection

-

Respiratory protection

• In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use
• respiratory protective device that is independent of circulating air.

9. Physical and Chemical Properties

General information

Appearance

Colourless liquid

Odour

Nearly odourless

pH

Not determined

Vapour Pressure

Not determined.

Density

at 20 °C (68 °F): 1.11 g/cm³ (9.26295 lbs/gal)

Boiling Point

>100 °C (>212 °F)

Melting Point

Undetermined.

Solubility

Not miscible or difficult to mix.

Specific Gravity of Density

Undetermined.

Flash Point

121 °C (249.8 °F)

Flammable (Explosive) Limits

Not flammable

Ignition Temperature

Product is not self-igniting.

Formula

• Solvent content:
• Organic solvents: 0.2 %
• VOC content: 0.20 %
• 2.0 g/l / 0.02 lb/gal
• Solids content: 10.0 %

10. Stability and Reactivity

Reactivity

No further relevant information available.

Chemical stability

Stable under normal conditions

Possibility of hazardous reactions

No dangerous reactions known.

Conditions to avoid

No further relevant information available.

Incompatible materials

No further relevant information available

11. Toxicological Information

Acute effects

No further relevant information available

Eye contact

Irritating effect.

Skin contact

Irritant to skin and mucous membranes.

Ingestion

No sensitizing effects known

Inhalation

No sensitizing effects known

Toxicity and irritation

• The product shows the following dangers according to internally approved calculation methods for preparations:
• Irritant

12. Ecological Information

Ecotoxicity

• Water hazard class 1 (Self-assessment): slightly hazardous for water
• Do not allow undiluted product or large quantities of it to reach ground water, water course or sewage system.

Persistence and degradability

No further relevant information available.

Bioaccumulative potential

No further relevant information available.

Other adverse effects

No further relevant information available.

13. Disposal Considerations

General information

14. Transport Information

ADG label required

HAZCHEM

No further relevant information available

UN Number

UN3082

Proper shipping name

• ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID,
• N.O.S. (Poly(dimethylsiloxane), vinyl terminated, Dimethylvinylated
• and trimethylated silica)

Transport hazard class

Class 9

Packing group

PG III

Environmental hazard

Symbol (fish and tree)

Special precautions for users

Warning: Miscellaneous dangerous substances and articles

Additional information

Not applicable

15. Regulatory Information

Poisons Schedule Number

-

Other Information

• Carcinogenic categories
• EPA (Environmental Protection Agency)
• 100-41-4 ethylbenzene D
• TLV (Threshold Limit Value established by ACGIH)
• 100-41-4 ethylbenzene A3

16. Other Information

SDS preparation date

2 March 2026

Comments

This information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship.

References

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