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N,N-Dimethylhydroxylamine hydrochloride

CAS No.
16645-06-0
Chemical Name:
N,N-Dimethylhydroxylamine hydrochloride
Synonyms
DIMETHYLHYDROXYLAMINEHYDROCHLORIDE;N,N-Dimethylhydroxylamine hydrochloride;N-hydroxy-N,N-dimethylamine hydrochloride;N,N-Dimethylhydroxylamine hydrochloride 99%;N,N-Dimethylhydroxylamine hydrochloride 99%;Methanamine,N-hydroxy-N-methyl-, hydrochloride (9CI);N,N-Dimethylhydroxylamine hydrochloride
CBNumber:
CB0305325
Molecular Formula:
C2H8ClNO
Molecular Weight:
97.54
MDL Number:
MFCD00012600
MOL File:
16645-06-0.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:48:06

N,N-Dimethylhydroxylamine hydrochloride Properties

Melting point 107-109 °C (lit.)
form solid
BRN 3905683
InChI InChI=1S/C2H7NO.ClH/c1-3(2)4;/h4H,1-2H3;1H
InChIKey HWWVAHCWJLGKLW-UHFFFAOYSA-N
SMILES N(O)(C)C.Cl
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319
Precautionary statements  P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/38
Safety Statements  26-36
WGK Germany  3
3
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2

N,N-Dimethylhydroxylamine hydrochloride price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 221457 N,N-Dimethylhydroxylamine hydrochloride 99% 16645-06-0 5g $371 2026-04-30 Buy
Sigma-Aldrich 221457 N,N-Dimethylhydroxylamine hydrochloride 99% 16645-06-0 25g $1020 2026-04-30 Buy
aablocks AA001WOI N,N-DIMETHYLHYDROXYLAMINE HYDROCHLORIDE 98% 16645-06-0 250mg $34 2026-05-28 Buy
aablocks AA001WOI N,N-DIMETHYLHYDROXYLAMINE HYDROCHLORIDE 98% 16645-06-0 1g $79 2026-05-28 Buy
aablocks AA001WOI N,N-DIMETHYLHYDROXYLAMINE HYDROCHLORIDE 98% 16645-06-0 5g $363 2026-05-28 Buy
Product number Packaging Price Buy
221457 5g $371 Buy
221457 25g $1020 Buy
AA001WOI 250mg $34 Buy
AA001WOI 1g $79 Buy
AA001WOI 5g $363 Buy

N,N-Dimethylhydroxylamine hydrochloride Chemical Properties, Uses, Production

Uses

N,N-Dimethylhydroxylamine hydrochloride was used in the synthesis of 4,4-dimethyl-2,5,5-triphenyl-l.3-dioxa-4-azonia-2-bora-5-boratacyclopentane. It was also used as a polymer-chain terminator.

Preparation

(a) Preparation of N,N-Dimethyl~(a-phenylethyl)amine Oxide. To a flask containing 11.0 g (0.074 mole) of N,N-dimethyl(a-phenylethyl)amine is added dropwise 18.3 g (0.19 mole) of 35% aqueous hydrogen peroxide, and the mixture is stirred for 11 hr at room temperature. The excess hydrogen peroxide is decomposed by stirring the mixture with 8 sqcm2 clean platinum foil until the evolution of oxygen ceases. Most of the water is removed by distillation at 35 mm Hg, at a bath temperature of 45-55°C. The material that condenses in the dry-ice trichloroethylene trap is saved for recovery in Procedure (b). The residual syrup is diluted with 25 ml of absolute ethanol, and the process is repeated twice while a capillary ni­trogen ebulliator is used. The resulting amine oxide is a viscous syrup and has a slight odor of styrene.
(b) Decomposition of N,N-Dimethyl-(a-phenylethyl)amine Oxide to Ν,Ν-Dimethylhydroxylamine. A 100 ml round bottom flask equipped with a capillary nitrogen inlet, and containing the preceding amine oxide is connected by a large-diameter tube to a condenser set for distillation with two receivers. Each receiver is cooled in a mixture of dry ice and trichlo­roethylene. The system is evacuated to 5 mm, and the flask is immersed in an oil bath at 85°C. The bath temperature is raised slowly to 115°C over a 35-min period, in which time most of the material distilled over. The bath temperature is finally raised to 150°C, in order to complete the (decom­position) distillation process. The residue remaining averages 0.35 g. The distillate in the dry-ice trap here and from Procedure (a) are combined, pentane is added as a solvent, and the mixture is washed with dilute hydrochloric acid. The acid solution is extracted with pentane, the latter washed with water until neutral.
The product is obtained from the combined aqueous layers containing hydrochloric acid by concentration under reduced pressure, to give a crys­talline residue. The latter, upon drying in a vacuum desiccator over P2O5 averages 6.73 g (94% yield), m.p. 101-101°C (sealed capillary). Recrys-tallization several times from a mixture of absolute ethanol and ether gives white, hygroscopic needles, m.p. 106.5-109°C (sealed capillary).
Preparation of Ν,Ν-Dimethylhydroxylamine Hydrochloride

N,N-Dimethylhydroxylamine hydrochloride Preparation Products And Raw materials

N,N-Dimethylhydroxylamine hydrochloride Suppliers

Global Suppliers ( 44)
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N-hydroxy-N,N-dimethylamine hydrochloride DIMETHYLHYDROXYLAMINEHYDROCHLORIDE N,N-Dimethylhydroxylamine hydrochloride 99% N,N-Dimethylhydroxylamine hydrochloride Methanamine,N-hydroxy-N-methyl-, hydrochloride (9CI) N,N-Dimethylhydroxylamine hydrochloride 99% N,N-Dimethylhydroxylamine hydrochloride 16645-06-0 CH32NOHHCl Building Blocks Hydroxylamines Nitrogen Compounds Organic Building Blocks Hydroxylamines Nitrogen Compounds Organic Building Blocks 1