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Silicates, borates and other salts

Disilane

Also known as Disilicane, Disilicoethane, Disilicon hexahydride

CAS 1590-87-0Formula H6Si2Molar mass 62.22 g/molEC 216-466-5
GHS signal word: Danger. Pictograms: Flammable, Gas under pressure, Harmful or irritant, Serious health hazard 1 supplier listed
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Disilane chemical structure, H6Si2, CAS 1590-87-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1590-87-0
Formula
H6Si2
Physical form
Gas
HS code
285000
Category
Silicates, borates and other salts
UN number
UN 3553
Illustrative photo, a small gas cylinder with a regulator in a lab on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Disilane?

Plain description, key identifiers and synonyms

Disilane is a member of silanes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
silylsilane
CAS number
1590-87-0 CAS number cross-checked
EC number
216-466-5
Molecular formula
H6Si2
InChIKey
PZPGRFITIJYNEJ-UHFFFAOYSA-N
InChI
InChI=1S/H6Si2/c1-2/h1-2H3
SMILES (canonical and isomeric)
[SiH3][SiH3]

Synonyms

  • Disilicane
  • Disilicoethane
  • Disilicon hexahydride
  • Silicoethane
  • silylsilane

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Gasexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
62.22 g/molcalc.
Exact mass
62.0008 Dacalc.
LogP (octanol/water)
-2.37calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS04: Gas under pressure
Gas under pressure
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H220Extremely flammable gas.
  • H280Contains gas under pressure, may explode if heated.
  • H312Harmful in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
  • H335May cause respiratory irritation.
  • H340May cause genetic defects.
  • H350May cause cancer.
Precautionary statements (29)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P233Keep container tightly closed.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P342 + P316If experiencing respiratory symptoms: Get emergency medical help immediately.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P377Leaking gas fire: do not extinguish, unless leak can be stopped safely.
  • P381In case of leakage, eliminate all ignition sources.
  • P403Store in a well-ventilated place.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P410 + P403Protect from sunlight. Store in a well-ventilated place.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3553

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Disilane suppliers

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Where suppliers are based

1 supplier in 0 countries

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Disilane price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Other.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Added by a premanufacture notice

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Disilane is traded under.

HS 2850.00Indicative HS code

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds…

World exports in 2024
$648M
−0.5% vs 2023, imports $610M
2019 to 2024
Top exporters
  1. United States33.3%
  2. China24.9%
  3. Japan10.9%
Top importers
  1. South Korea17.6%
  2. China15.8%
  3. India * partner reported12.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Disilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Disilane, based on the data on this page

What is Disilane?

Disilane is a member of silanes.

What is the CAS number of Disilane?

The CAS registry number of Disilane is 1590-87-0.

What is the molecular formula and weight of Disilane?

The molecular formula of Disilane is H6Si2 and its molar mass is 62.22 g/mol.

What is Disilane used for?

Industrial uses: Other.

Is Disilane hazardous?

Disilane carries the GHS signal word "Danger". Main hazards: extremely flammable gas, contains gas under pressure, may explode if heated, harmful in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Disilane?

Disilane is usually classified under HS code 285000 (Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Disilane?

CompoundList lists 1 supplier of Disilane. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Disilane?

Suppliers quote Disilane on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Disilane

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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