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Sulfur and phosphorus compounds

Hexamethylphosphorous triamide

Also known as Tris(dimethylamino)phosphine, Hexametapil, Phosphorous triamide, hexamethyl-

CAS 1608-26-0Formula C6H18N3PMolar mass 163.21 g/molEC 216-534-4
GHS signal word: Danger. Pictograms: Flammable, Serious health hazard 10 suppliers listed
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Hexamethylphosphorous triamide chemical structure, C6H18N3P, CAS 1608-26-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1608-26-0
Formula
C6H18N3P
Molar mass
163.21 g/mol
EC number
216-534-4
HS code
294200
Category
Sulfur and phosphorus compounds

What is Hexamethylphosphorous triamide?

Plain description, key identifiers and synonyms

Hexamethylphosphorous triamide is a chemical substance with the molecular formula C6H18N3P and a molar mass of 163.21 g/mol. Its CAS registry number is 1608-26-0. The IUPAC name is N-[bis(dimethylamino)phosphanyl]-N-methylmethanamine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-[bis(dimethylamino)phosphanyl]-N-methylmethanamine
CAS number
1608-26-0 CAS number cross-checkedOther or deprecated CAS: 59758-27-9
EC number
216-534-4
Molecular formula
C6H18N3P
UNII
6072HG2UW4
MDL number
MFCD00008301
InChIKey
XVDBWWRIXBMVJV-UHFFFAOYSA-N
InChI
InChI=1S/C6H18N3P/c1-7(2)10(8(3)4)9(5)6/h1-6H3
SMILES (canonical and isomeric)
CN(C)P(N(C)C)N(C)C

Synonyms

  • Tris(dimethylamino)phosphine
  • Hexametapil
  • Phosphorous triamide, hexamethyl-
  • Hexamethyltriamidophosphite
  • Hexamethyltriaminophosphine
  • N,N,N',N',N'',N''-Hexamethylphosphinetriamine
  • Phosphine, tris(dimethylamino)-
  • phosphorous triamide, N,N,N',N',N'',N''-hexamethyl-
  • [bis(dimethylamino)phosphanyl]dimethylamine
  • N-[bis(dimethylamino)phosphanyl]-N-methylmethanamine
  • Hexamethylphosphorus triamide
  • P(NMe2)3
  • N,N,N',N',N'',N''-hexamethylphosphorous triamide
  • HMPT (VAN)
  • Tri(dimethylamino)phosphine
  • ((CH3)2N)3P
  • Hexamethyl phosphorus triamide
  • N-[bis(dimethylamino)phosphanyl]-N-methyl-methanamine
  • Trisdimethylaminophosphine
  • trisdimethylaminophosphorus
  • tris-dimethylaminophosphine
  • tris (dimethylamino)phosphine
  • 4-04-00-00274 (Beilstein Handbook Reference)
  • Hexamethyl phosphorous triamide
  • tris-(dimethylamino) phosphine
Show all 32 synonyms
  • (ME2N)3P
  • Tris(dimethylamino)phosphine, 97%
  • hexamethyl phosphorous acid triamide
  • Tris(dimethylamino)phosphine pound HMPT pound(c)
  • N-[bis(dimethylamino)phosphanyl]-N-methylmethanamin
  • Tris(dimethylamino)phosphine, purum, >=97.0% (GC)
  • Tris(Dimethylamino)Phosphine, N,N,N',N',N'',N''-Hexamethyl-Phosphorous TriamideTriamide

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
163.21 g/molcalc.
Exact mass
163.1238 Dacalc.
LogP (octanol/water)
0.9calc.
Topological polar surface area
9.72 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
10calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
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
GHS02: Flammable
Flammable
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H226Flammable liquid and vapour.
  • H350May cause cancer.
Precautionary statements (14)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P318If exposed or concerned, get medical advice.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Hexamethylphosphorous triamide suppliers

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Where suppliers are based

10 suppliers in 3 countries

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Hexamethylphosphorous triamide 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

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2942.00Indicative HS code

Organic compounds not elsewhere classified in chapter 29

World exports in 2024
$589M
−43.5% vs 2023, imports $614M
2019 to 2024
Top exporters
  1. India * partner reported20.7%
  2. United States18.6%
  3. Italy10.4%
Top importers
  1. United States15.1%
  2. Italy6.7%
  3. Japan5.3%

* Partner reported figures, a lower bound.

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

The HS code shown for Hexamethylphosphorous triamide is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Hexamethylphosphorous triamide, based on the data on this page

What is Hexamethylphosphorous triamide?

Hexamethylphosphorous triamide is a chemical substance with the molecular formula C6H18N3P and a molar mass of 163.21 g/mol. Its CAS registry number is 1608-26-0. The IUPAC name is N-[bis(dimethylamino)phosphanyl]-N-methylmethanamine.

What is the CAS number of Hexamethylphosphorous triamide?

The CAS registry number of Hexamethylphosphorous triamide is 1608-26-0. Other or deprecated CAS numbers: 59758-27-9.

What is the molecular formula and weight of Hexamethylphosphorous triamide?

The molecular formula of Hexamethylphosphorous triamide is C6H18N3P and its molar mass is 163.21 g/mol.

What is Hexamethylphosphorous triamide used for?

Known uses and roles of Hexamethylphosphorous triamide include building blocks in research and laboratory.

Is Hexamethylphosphorous triamide hazardous?

Hexamethylphosphorous triamide carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, may cause cancer. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Hexamethylphosphorous triamide?

Hexamethylphosphorous triamide is usually classified under HS code 294200 (XIII. OTHER ORGANIC COMPOUNDS, other organic compounds). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Hexamethylphosphorous triamide?

CompoundList lists 10 suppliers of Hexamethylphosphorous triamide in China, United States and Japan. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Hexamethylphosphorous triamide?

Suppliers quote Hexamethylphosphorous triamide 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

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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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