HuagongsheHuagongshe Chemistry Print Report · For research reference only

HCID 137125Generated: October 30, 2026

Diborane(4)tetramine, octamethyl-

Tetrakis(dimethylamido)diborane · NSC 220326 · NSC 665722 · amino)diboron · TETRAKIS(DIMETHYLAMIDO)DIBORON · Tetrakis(dimethylamino)diboron · TETRAKIS(DIMETHYLAMINO)DIBORANE · Diborane(4)tetraMine, octaMethyl-

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Diborane(4)tetramine, octamethyl- molecular structure

Identifiers & Physical Properties

CAS No.	1630-79-1
Molecular formula	C8H24B2N4
Average molar mass	197.9 g/mol
Monoisotopic mass	198.2187071 g/mol
SMILES	CN(C)B(B(N(C)C)N(C)C)N(C)C
InChIKey	KMCDRSZVZMXKRL-UHFFFAOYSA-N
PubChem CID	137125
EC No.	605-312-6
DTXSID	DTXSID90167499

Chemical & Physical Properties

Topological polar surface area	13
Hydrogen bond donors	0
Hydrogen bond acceptors	4
Rotatable bonds	5
Heavy atoms	14
Formal charge	0
Complexity	127
Melting point	-33°C(lit.)
Boiling point	55-57 °C/2.5 mmHg(lit.)
Density	0.926 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.4750(lit.)
Flash point	99 °C
Storage conditions	Storage temp. 2-8°C
pKa (acidity coefficient)	-0.25±0.70(Predicted)
Physical state	liquid
Color	colorless
Sensitivity	moisture sensitive
InChI	InChI=1S/C8H24B2N4/c1-11(2)9(12(3)4)10(13(5)6)14(7)8/h1-8H3
InChIKey	KMCDRSZVZMXKRL-UHFFFAOYSA-N
SMILES	B(N(C)C)(N(C)C)B(N(C)C)N(C)C
FDA UNII	5EM4678PEX
GHS pictogram	GHS07
Signal word	Warning
GHS hazard statements	H315-H319-H335
GHS precautionary statements	P261-P305+P351+P338
Hazard symbols	Xi
Risk statements (R)	36/37/38
Safety statements (S)	26
Hazard Note	Irritant
Customs code	2931900090

Safety & Regulations

GHS classification	DangerH225 (71.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]P203, P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P273, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P318, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 146 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and Categories	Flam. Liq. 2 (71.9%)
Customs code	2931900090
Risk statements (R)	36/37/38
Signal word	Warning
GHS pictogram	GHS07
Hazard symbols	Xi
hazard_note	Irritant
Safety statements (S)	26
GHS hazard statements	H315-H319-H335
GHS precautionary statements	P261-P305+P351+P338

CAS No.

1630-79-1

Molecular formula

C8H24B2N4

Average molar mass

197.9 g/mol

Monoisotopic mass

198.2187071 g/mol

SMILES

CN(C)B(B(N(C)C)N(C)C)N(C)C

InChIKey

KMCDRSZVZMXKRL-UHFFFAOYSA-N

PubChem CID

137125

EC No.

605-312-6

DTXSID

DTXSID90167499

Chemical & Physical Properties

Topological polar surface area

Hydrogen bond donors

Hydrogen bond acceptors

Rotatable bonds

Heavy atoms

Formal charge

Complexity

127

Melting point

-33°C(lit.)

Boiling point

55-57 °C/2.5 mmHg(lit.)

Density

0.926 g/mL at 25 °C(lit.)

Refractive index

n20/D 1.4750(lit.)

Flash point

99 °C

Storage conditions

Storage temp. 2-8°C

pKa (acidity coefficient)

-0.25±0.70(Predicted)

Physical state

liquid

Color

colorless

Sensitivity

moisture sensitive

InChI

InChI=1S/C8H24B2N4/c1-11(2)9(12(3)4)10(13(5)6)14(7)8/h1-8H3

InChIKey

KMCDRSZVZMXKRL-UHFFFAOYSA-N

SMILES

B(N(C)C)(N(C)C)B(N(C)C)N(C)C

FDA UNII

5EM4678PEX

GHS pictogram

GHS07

Signal word

Warning

GHS hazard statements

H315-H319-H335

GHS precautionary statements

P261-P305+P351+P338

Hazard symbols

Risk statements (R)

36/37/38

Safety statements (S)

Hazard Note

Irritant

Customs code

2931900090

Safety & Regulations

GHS classification

DangerH225 (71.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]P203, P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P273, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P318, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 146 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard Classes and Categories

Flam. Liq. 2 (71.9%)

Customs code

2931900090

Risk statements (R)

36/37/38

Signal word

Warning

GHS pictogram

GHS07

Hazard symbols

hazard_note

Irritant

Safety statements (S)

GHS hazard statements

H315-H319-H335

GHS precautionary statements

P261-P305+P351+P338