Tetrapropoxysilane
Basic information
- CAS
682-01-9- Standard SMILES
CCCO[Si](OCCC)(OCCC)OCCC- InChIKey
ZQZCOBSUOFHDEE-UHFFFAOYSA-N- Molecular formula
- C12H28O4Si
- Average molar mass
- 264.43 g/mol
- Monoisotopic mass
- 264.17568591
Names & identifiers
- Preferred name
- Tetrapropoxysilane
- IUPAC
- tetrapropyl silicate
- English name
- Tetrapropoxysilane
- Molecular formula
- C12H28O4Si
- Molecular weight
- 264.43
Names & synonyms
Tetrapropyl orthosilicateTetrapropoxysilaneSilicic acid (H4SiO4), tetrapropyl estertetra-n-propyl silicateDTXSID9042382Propyl silicatetetra-n-Propyl orthosilicateTetrapropyloxysilaneUNII-4PE821G3GH4PE821G3GHSilicon orthopropoxideSilicon tetrapropoxide
Show more names
CT2090Dynasil Pn-Propyl silicateTETRAPROPOXYLSILANETetrapropylsilicatePropyl orthosilicateTETRA-N-PROPOXYSILANE
n-propyl orthosilicateSilane, tetrapropoxy-tetra-n-propoxy-silaneEINECS 211-659-0Propyl silicate ((PrO)4Si)DTXCID7022382ZQZCOBSUOFHDEE-UHFFFAOYSA-PROPYL ORTHOSILICATE [II]
Database identifiers
- CAS
682-01-9- PubChem CID
- 69627
- DTXSID
DTXSID9042382- ChEMBL
CHEMBL3181871- UNII
- 4PE821G3GH
- EC Number
- 211-659-0
- Nikkaji
- J113.278D
Properties
Computed structural properties
- Topological polar surface area
- 36.9 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 12
- Heavy atoms
- 17
- Formal charge
- 0
- Complexity
- 129
Experimental & physicochemical properties
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
SpringerMaterials PropertiesBoiling point
Density0.913 @25 °C
Boiling Point94 °C @760 [mm Hg]
Physical Description
Liquid; Other Solid
Colorless liquid; [Alfa Aesar MSDS]
Physicochemical properties
- Melting point
- -80 °C · <-80°C
- Boiling point
- 225 °C · 225 °C
- Density
- 0.91 · 0.91
- vapor density
- 1 · >1 (vs air)
- vapor pressure
- 0.26 Pa · 0.26Pa at 25℃
- refractive index
- 1.4 · 1.40
- Flash point
- 104 °C · 104 °C
- storage temp.
- Inert atmosphere,Room Temperature
- form
- clear liquid
- color
- Colorless to Almost colorless
- Specific Gravity
- 0.916 · 0.916
- Viscosity
- 1.51 mm2/s · 1.51mm2/s
- Water Solubility
- 78 mg/L · 78mg/L at 20℃
- Hydrolytic Sensitivity
- 7 · 7: reacts slowly with moisture/water
- Sensitive
- Moisture Sensitive
- BRN
- 1706115 · 1706115
- InChI
- 1S/C12H28O4Si/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4/h5-12H2,1-4H3
- InChIKey
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N
- SMILES
- CCCO[Si](OCCC)(OCCC)OCCC
- LogP
- 3.4 at · 3.4 at 20℃
- CAS DataBase Reference
- 682 · 682-01-9(CAS DataBase Reference)
- FDA UNII
- 4 PE821G3GH · 4PE821G3GH
- NIST Chemistry Reference
- Tetrapropyl silicate(682-01-9)
- EPA Substance Registry System
- Silicic acid (H4SiO4), tetrapropyl ester (682-01-9)
- UNSPSC Code
- 12352103 · 12352103
- NACRES
- 23 · NA.23
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 315 · H315-H319-H335
- Precautionary statements
- 261 · P261-P264-P271-P280-P302+P352-P305+P351+P338
- target organs
- Respiratory system
- PPE
- Eyeshields, Gloves, type ABEK (EN14387) respirator filter
- Hazard Codes
- Xi
- Risk Statements
- 36 · 36/37/38
- Safety Statements
- 26 · 26-36-37/39
- RIDADR
- 1993 · 1993
- WGK Germany
- 3 · 3
- F
- 10 · 10-21
- TSCA
- TSCA listed
- HazardClass
- 8 · 8
- PackingGroup
- III
- HS Code
- 2920900090 · 2920900090
- Storage Class
- 10 · 10 - Combustible liquids
- Hazard Classifications
- 2 Skin · Eye Irrit. 2Skin Irrit. 2STOT SE 3
- REACH Registrations
- Active
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 7.9% (20 of 254) of reports.
Warning
H315 (48.8%): Causes skin irritation [Warning Skin corrosion/irritation]
P260, P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 254 reports by companies from 12 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: Silicic acid (H4SiO4), tetrapropyl ester
Silicic acid (H4SiO4), tetrapropyl ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H4SiO4), tetrapropyl ester are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 12-09-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/14206
Tetrapropyl orthosilicate: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazards SummaryA skin and strong eye irritant; [Alfa Aesar MSDS] See Ethyl silicate and Tetrabutyl orthosilicate.
Hazard Classes and CategoriesSkin Irrit. 2 (48.8%)
Safety & protection
Protective Action Criteria (PAC)
12 [mg/m3]
130 [mg/m3]
790 [mg/m3]
Safety data
- F
- 10-21
- PPE
- Eyeshields, Gloves, type ABEK (EN14387) respirator filter
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- 1993
- hs_code
- 2920900090
- risk_code
- 36/37/38
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xi
- safety_code
- 26-36-37/39
- hazard_class
- 8
- Storage Class
- 10 - Combustible liquids
- packing_group
- III
- target organs
- Respiratory system
- Hazard statements
- H315-H319-H335
- REACH Registrations
- Active
- Hazard Classifications
- Eye Irrit. 2Skin Irrit. 2STOT SE 3
- Precautionary statements
- P261-P264-P271-P280-P302+P352-P305+P351+P338
Chemistry & industry
Uses & manufacturing
UsesPermitted for use as an inert ingredient in non-food pesticide products; [EPA]
U.S. Production2023: <50,000 lb
Industry UsesAdhesion/cohesion promoter
General Manufacturing Information
Paint and Coating Manufacturing
Silicic acid (H4SiO4), tetrapropyl ester: ACTIVE
Applications
UsesTetrapropoxysilane is used for the treatment of paints, coatings, silicone rubber and inorganic materials.
Upstream & downstream products
Upstream raw materials
Related reactions
1 records
Compound notes
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