Whether you want to focus on the story ofStarfield’s main quest, or spend your time building your own settlements, you’ll spend some time collecting different materials. Starfield has an immense array of items with all different purposes, such as for use in crafting or being sold for a bunch of credits.

Chlorosilanes are chemical compounds often used to create silicon-based products. In Starfield, this purpose carries over for Chlorosilanes, as they are a crafting component. If you need to gather some of these up, here are the best ways to get them.

A scanned planet in Starfield showing that you can get chlorosilanes on the surface.

Best Planets To Farm Chlorosilanes (SiH3Cl)

Chlorosilanes are an uncommon inorganic resource that you can find on a planet’s surface. You may come acrossseeps in the ground that Chlorosilanes can be harvested from, similar to howH2Ocan be gathered.

WhileChlorosilanesmight not be on every planet and moon in the Settled Systems, you should haveno trouble finding themas you travel around. You can actuallyfind Chlorosilanes on over 100 different planets.

A container labelled “Chlorosilanes” in Starfield.

That being said, here are some of thebest places to find Chlorosilanes for both early game and late game:

Zelazny II

Zelazny

There are plenty ofgreat planets tobuild outposts on, especially if you’relooking to farm for Chlorosilanes.Try building an outpost on planets like the ones mentioned above that are eithertemperate or have plenty of other resourcesas well.

Alternate Ways To Get Chlorosilanes

Like the vast majority of items in Starfield, you’ll be able toloot Chlorosilanes randomly. They can befound on defeated enemies, in randomstorage containers, orsitting around in buildings.

There arenumerous vendors in Starfieldthat will have Chlorosilanes in their stock. After buying items from vendors, you’re able to alsowait 24 to 48 hoursfor their stocks to be replenished.

The Weaponry Research Lab screen in Starfield.

Here is alist of vendors you should be able to reliably buy Chlorosilanes from:

Porrima II

Porrima

If you arehailed by a spaceship during a random encounter, you canask to tradewith them. See if they have anyChlorosilanes in their inventory.

What Are Chlorosilanes Used For?

Chlorosilanesare primarily used forupgrading your weaponsorbuilding structures at your outposts.

You will need Chlorosilanes to complete theWeaponryresearch projects,Optics and Laser Mods 1 and 2. This will unlock the ability tocraft Holographic Sights, Long Scopes, and Short Scopes.

Chlorosilanes are also a crafting material used to create severalOptic mods for your weapons. You need them to make:

Chlorosilanes are also needed to complete a fewOutpost Developmentresearch projects.

You will need tolevel up your Outpost Engineering skillto fully complete these research projects.