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Isotope-labelled compounds

(2H)Formaldehyde

Also known as dideuteriomethanone, Formaldehyde-d2, Formaldehyde-d2 (6CI,8CI,9CI)

CAS 1664-98-8Formula CH2OMolar mass 32.04 g/molEC 216-775-5
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe), Harmful or irritant, Serious health hazard 2 suppliers listed
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(2H)Formaldehyde chemical structure, CH2O, CAS 1664-98-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1664-98-8
Formula
CH2O
Molar mass
32.04 g/mol
Physical form
Gas
HS code
284590
Category
Isotope-labelled compounds
Illustrative photo, industrial gas cylinders secured with a safety chain in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is (2H)Formaldehyde?

Plain description, key identifiers and synonyms

(2H)Formaldehyde is a chemical substance with the molecular formula CH2O and a molar mass of 32.04 g/mol. Its CAS registry number is 1664-98-8. The IUPAC name is dideuteriomethanone.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dideuteriomethanone
CAS number
1664-98-8 CAS number cross-checkedOther or deprecated CAS: 43094-80-0
EC number
216-775-5
Molecular formula
CH2O
MDL number
MFCD00145070
InChIKey
WSFSSNUMVMOOMR-DICFDUPASA-N
InChI
InChI=1S/CH2O/c1-2/h1H2/i1D2
Canonical SMILES
C=O
Isomeric SMILES
[2H]C(=O)[2H]

Synonyms

  • dideuteriomethanone
  • Formaldehyde-d2
  • Formaldehyde-d2 (6CI,8CI,9CI)
  • Formaldehyde-d2 (~20% in D2O)
  • Deuterated formaldehyde, Formalin-d2
  • Formalin-d2 (20% w/w in D2O)
  • Formalin-d2 (20% w/w in H2O)
  • Formalin-d2
  • Deuterated formaldehyde
  • formaldehyde-d
  • Formaldehyde-d2-
  • (~2~H_2_)Formaldehyde
  • Formaldehyde-d2 (~20per cent in D2O)
  • Formaldehyde-d2 solution, 20 wt. % in D2O
  • Formalin-d2 (20% w/w in h2o) 99 atom % d
  • Formaldehyde-d2 solution ~20 wt. % in D2O, 98 atom % D

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
32.04 g/molcalc.
Exact mass
32.0231 Dacalc.
LogP (octanol/water)
-0.18calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H301 + H311 + H331Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled.
  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H318Causes serious eye damage.
  • H331Toxic if inhaled.
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
  • H351Suspected of causing cancer.
Precautionary statements (30)
  • P203Obtain, read and follow all safety instructions before use.
  • P233Keep container tightly closed.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P342 + P316If experiencing respiratory symptoms: Get emergency medical help immediately.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403Store in a well-ventilated place.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

(2H)Formaldehyde suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 2 countries

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(2H)Formaldehyde price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code (2H)Formaldehyde is traded under.

HS 2845.90Indicative HS code

Compounds, inorganic or organic, of such isotopes, whether or not chemically defined

World exports in 2024
$2.67B
+19.0% vs 2023, imports $1.67B
2019 to 2024
Top exporters
  1. Ireland55.3%
  2. Hong Kong11.8%
  3. United States10.7%
Top importers
  1. China24.3%
  2. Ireland21.9%
  3. South Korea13.3%
Reported customs values in USD, not prices.Full trade data

The HS code shown for (2H)Formaldehyde is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about (2H)Formaldehyde, based on the data on this page

What is (2H)Formaldehyde?

(2H)Formaldehyde is a chemical substance with the molecular formula CH2O and a molar mass of 32.04 g/mol. Its CAS registry number is 1664-98-8. The IUPAC name is dideuteriomethanone.

What is the CAS number of (2H)Formaldehyde?

The CAS registry number of (2H)Formaldehyde is 1664-98-8. Other or deprecated CAS numbers: 43094-80-0.

What is the molecular formula and weight of (2H)Formaldehyde?

The molecular formula of (2H)Formaldehyde is CH2O and its molar mass is 32.04 g/mol.

What is (2H)Formaldehyde used for?

Known uses and roles of (2H)Formaldehyde include isotope-labelled compounds in research and laboratory.

Is (2H)Formaldehyde hazardous?

(2H)Formaldehyde carries the GHS signal word "Danger". Main hazards: toxic if swallowed. toxic in contact with skin. toxic if inhaled, toxic if swallowed, toxic in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of (2H)Formaldehyde?

(2H)Formaldehyde is usually classified under HS code 284590 (Isotopes other than those of heading 2844, compounds, inorganic or organic, of such…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy (2H)Formaldehyde?

CompoundList lists 2 suppliers of (2H)Formaldehyde in United Kingdom and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of (2H)Formaldehyde?

Suppliers quote (2H)Formaldehyde 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 (2H)Formaldehyde

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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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