(Dichloromethylene)dimethylammonium chloride Property

Melting point:

183-187 °C (dec.) (lit.)

Boiling point:

267.81°C (rough estimate)

Density 

1.6902 (rough estimate)

refractive index 

1.6300 (estimate)

storage temp. 

2-8°C

solubility 

slightly sol. in Chloroform

form 

Crystalline Powder

color 

Light yellow

Water Solubility 

hydrolysis

Sensitive 

Moisture Sensitive

Merck 

14,9977

BRN 

4157987

CAS DataBase Reference

33842-02-3(CAS DataBase Reference)

Safety

Hazard Codes 

C

Risk Statements 

14-34-37-29-22

Safety Statements 

26-36/37/39-45-8

RIDADR 

UN 3261 8/PG 3

WGK Germany 

3

F 

3-10-21

HazardClass 

8

PackingGroup 

III

HS Code 

29252900

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H290May be corrosive to metals

H314Causes severe skin burns and eye damage

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

P234Keep only in original container.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

P390Absorb spillage to prevent material damage.

P405Store locked up.

P406Store in corrosive resistant/… container with a resistant inner liner.

P501Dispose of contents/container to..…

(Dichloromethylene)dimethylammonium chloride Chemical Properties,Usage,Production

Chemical Properties

light yellow crystalline powder

Uses

Dichloromethylene-dimethyliminium Chloride is a useful chemical reagent. It has been used in the synthesis of 12-deoxychlorovulone II analogs via chloride nucleophilic substitution reaction catalyzed by Viehe''s salt.

Uses

Dichloromethylene-dimethyliminium chloride was used as reagent in the synthesis of selenourea and (R)-2-(2-chloroethyl)pyrrolidine-1-carboxylic acid ethyl ester. It was used for introducing amide chloride group into activated substrates.

Uses

Chlorinating agent; introduces amide chloride groups into activated substrates. Building block in organic synthesis.

General Description

Dichloromethylene-dimethyliminium chloride (Vilsmeier reagent) reacts with o-acetaminophenols under Meth-Cohn conditions to yield 2-formylpyrido[2,1-b]benzoxazoles.