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440183

(3-Chloropropyl)trimethoxysilane

≥97%

Synonym(s):

δ-Chloropropyltrimethoxysilane, (γ-Chloropropyl)trimethoxysilane, (3-Chloropropyl)trimethoxysilane, 3-(Trimethoxysilyl)propyl chloride

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Size/SKUAvailabilityPrice
100 mL

Estimated to ship onMay 26, 2026fromMILWAUKEE

$72.90
1 L

Estimated to ship onMay 26, 2026fromMILWAUKEE

$385.00

About This Item

Linear Formula:
Cl(CH2)3Si(OCH3)3
CAS Number:
Molecular Weight:
198.72
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
EC Number:
219-787-9
Beilstein/REAXYS Number:
969627
MDL number:

$72.90


Estimated to ship onMay 26, 2026Details


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Quality Segment

assay

≥97%

form

liquid

refractive index

n20/D 1.419 (lit.)

bp

195 °C/750 mmHg (lit.)

density

1.09 g/mL at 25 °C (lit.)

SMILES string

CO[Si](CCCCl)(OC)OC

InChI

1S/C6H15ClO3Si/c1-8-11(9-2,10-3)6-4-5-7/h4-6H2,1-3H3

InChI key

OXYZDRAJMHGSMW-UHFFFAOYSA-N

General description

(3-Chloropropyl)trimethoxysilane (CPTMS) is an organo-silane which forms a self-assembled monolayer (SAMs) that facilitates the surface modification of different bio-and nano- materials.

Application

(3-Chloropropyl)trimethoxysilane may be used in the synthesis of octakis(3-chloropropyl)octasilsesquioxane.{35}
CPTMS can be used to silanize a variety of nanoparticles like carbon nanotubes (CNT) and silica nanoparticles (SiO2) for different applications like development for molecularly imprinted polymers for protein detection and fabrication of mesoporous silica(organic-inorganic hybrid). It may be used to functionalize silica-iron oxide nanoparticles which can be used as catalysts for the synthesis of pyrano(3,2−c:5,6−c′)dichromene-6,8-dione derivatives.

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This Item
569615281778175617
Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

200

density

1.09 g/mL at 25 °C (lit.)

density

1.000 g/mL at 25 °C (lit.)

density

1.027 g/mL at 25 °C (lit.)

density

1.057 g/mL at 25 °C (lit.)

refractive index

n20/D 1.419 (lit.)

refractive index

n20/D 1.418 (lit.)

refractive index

n20/D 1.424 (lit.)

refractive index

n20/D 1.444 (lit.)

bp

195 °C/750 mmHg (lit.)

bp

-

bp

91-92 °C/15 mmHg (lit.)

bp

213-215 °C (lit.)

assay

≥97%

assay

95%

assay

97%

assay

95%

form

liquid

form

-

form

liquid

form

liquid


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Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

161.1 °F - closed cup

flash_point_c

71.7 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter



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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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