Polydimethylsiloxane grease
- CAS Number
- -
- HSN Code
- 39100010
- Molecular Formula
- (C2H6OSi)n
- Catalogue Number
- AL01323
- Purity
- > 99%
- Molecular Weight
- Variable
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Silicone grease (high vacuum silicone grease) is a specialized lubricant and sealant primarily composed of polydimethylsiloxane. This high vacuum grade silicone grease is essential for greasing glass joints in vacuum apparatus, ensuring a reliable seal and reducing friction. Its unique properties make it suitable for use in a variety of laboratory and industrial applications where vacuum conditions are present. The grease is designed to withstand a wide temperature range and is chemically inert, making it an ideal choice for sensitive environments.
Also known as Silicone grease, Vacuum grease.
- Catalogue No.
- AL01323
- CAS Number
- -
- Molecular Formula
- (C2H6OSi)n
- Molecular Weight
- Variable
- HSN Code
- 39100010
- Grade
- High vacuum grade
- Product Form
- Substance
Silicone grease appears as a clear, colorless to pale yellow viscous substance. It has a typical density of approximately 0.96 g/cm³ at 25°C. The grease remains stable over a wide temperature range, with a service temperature of -50°C to 200°C. It is insoluble in water but soluble in organic solvents such as toluene and hexane. The grease has a high viscosity, typically around 100,000 to 200,000 cP at 25°C, which contributes to its excellent sealing properties.
- Appearance
- Clear, colorless to pale yellow viscous grease
- Shelf Life
- -
- Packaging
- -
- Storage
- Store in a cool, dry place away from direct sunlight.
1.1 — Product identifier
- Chemical Name
- Polydimethylsiloxane grease
- Catalogue No.
- AL01323
- Product form
- Substance
- CAS Number
- Not applicable
- EC Number
- Not applicable
- Grade
- High vacuum grade
- EC Index Number
- Not applicable
- Chemical Formula
- (C2H6OSi)n
- HSN Code
- 39100010
- Synonyms
- Silicone grease, Vacuum grease
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Lubricant and sealant for vacuum applications
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.3 — Other hazards
- Other hazards
- None identified
3.1 — Substance
- Name
- Polydimethylsiloxane grease
- CAS No.
- Not applicable
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- Wash with soap and water. If irritation occurs, seek medical attention.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention.
- First-aid measures after ingestion
- Rinse mouth. Do not induce vomiting. If symptoms occur, seek medical attention.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- May cause mild irritation upon contact with skin or eyes.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- None known; non-flammable under normal conditions.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Contain spill and absorb with inert material. Dispose of in accordance with local regulations.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Use appropriate protective equipment. Clean area thoroughly after spill.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Avoid contact with skin and eyes. Use in well-ventilated areas.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Store in a cool, dry place, away from incompatible materials.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Not required under normal use conditions.
9.1 — Information on basic physical and chemical properties
- Physical state
- Viscous grease
- Colour
- Clear to pale yellow
- Odour
- Odourless
- Odour threshold
- Not applicable
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- Not applicable
- Freezing point
- Not applicable
- Boiling point
- Not applicable
- Flash point
- > 200 °C
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not applicable
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- < 0.1 mmHg at 20°C
- Relative vapour density at 20°C
- Not applicable
- Density
- ~0.96 g/cm³
- Solubility
- Insoluble in water, soluble in organic solvents
- Log Pow
- Not applicable
- Viscosity, kinematic
- 100,000 - 200,000 cP at 25°C
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions of use and storage.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- No dangerous reactions known under normal conditions of use.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizing agents, acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Not classified as acutely toxic.
- Skin corrosion/irritation
- May cause mild irritation.
- Serious eye damage/irritation
- May cause mild irritation.
- Respiratory or skin sensitisation
- Not a sensitizer.
- Germ cell mutagenicity
- Not classified
- Carcinogenicity
- Not classified
- Specific target organ toxicity (single exposure)
- Not classified as a specific target organ toxicant.
- Specific target organ toxicity (repeated exposure)
- Not classified
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- Not applicable
- UN-No. (IMDG)
- Not applicable
- UN-No. (IATA)
- Not applicable
- UN-No. (ADN)
- Not applicable
- UN-No. (RID)
- Not applicable
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Not classified as dangerous goods
- Proper Shipping Name (IMDG)
- Not classified as dangerous goods
- Proper Shipping Name (IATA)
- Not classified as dangerous goods
- Proper Shipping Name (ADN)
- Not classified as dangerous goods
- Proper Shipping Name (RID)
- Not classified as dangerous goods
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- Not applicable
14.4 — Packing group
- Packing group (ADR)
- Not applicable
- Packing group (IMDG)
- Not applicable
- Packing group (IATA)
- Not applicable
- Packing group (ADN)
- Not applicable
- Packing group (RID)
- Not applicable
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Silicone grease is widely used in laboratory research for lubricating and sealing ground-glass joints, stopcocks, and vacuum apparatus. Its chemical inertness makes it suitable for use in various chemical processes, including those involving reactive substances. Additionally, it is utilized in the automotive industry for lubricating rubber seals and gaskets, as well as in electrical applications to protect connections from moisture and corrosion. The grease is also employed in the food industry for applications that require a non-toxic lubricant, adhering to FDA regulations for incidental food contact.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL01323
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- Variable
| Test | Standard | Observed |
|---|---|---|
| Appearance | Clear, colorless to pale yellow | Clear, colorless |
| Density | 0.96 g/cm³ | 0.95 g/cm³ |
| Viscosity | 100,000 - 200,000 cP | 150,000 cP |
| Moisture content | < 0.5% | 0.3% |
The above product is expected to comply with High vacuum grade grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| High vacuum grade | > 99% | Not applicable | < 0.5% | < 0.1% | None detected | Insoluble in water, soluble in organic solvents |
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“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
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