N-nitrosodibenzylamine Property

Melting point:

56-58°C

Boiling point:

367.89°C (rough estimate)

Density 

1.0852 (rough estimate)

refractive index 

1.6419 (estimate)

storage temp. 

-20°C Freezer, Under Inert Atmosphere

solubility 

Chloroform (Slightly), Methanol (Slightly)

form 

Low-Melting Solid to Solid

pka

-5.91±0.70(Predicted)

color 

Pale Yellow to Yellow

Safety

Safety Statements 

24/25

HS Code 

29214990

Toxicity

LD50 orl-rat: 900 mg/kg ZEKBAI 69,103,1967

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

H350May cause cancer

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

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

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

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

P321Specific treatment (see … on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P501Dispose of contents/container to..…

N-nitrosodibenzylamine Chemical Properties,Usage,Production

Chemical Properties

Yellow Low Melting Solid

Uses

N-Nitrosodibenzylamine (NDBzA) is mutagenic to Salmonella typhimurium and induces DNA strand breaks in isolated rat hepatocytes.

Production Methods

Human exposure to NDBzA was not suspected, but then there were reports of the compound in hams wrapped in rubber netting. Concentrations of NDBzA from 10 to 100 ppb were common, and some were as high as 512 ppb. Like other nitrosamines in rubber, NDBzA arose by nitrosation of dialkylamino compounds (in this case dibenzyl-) during manufacture.

Synthesis Reference(s)

Tetrahedron Letters, 25, p. 2619, 1984 DOI: 10.1016/S0040-4039(01)81245-4

Safety Profile

Moderately toxic by ingestion.Mutation data reported. When heated to decomposition itemits toxic vapors of NOx

Carcinogenicity

There is a single report of a test of nitrosodibenzylamine for carcinogenicity in rats using high doses and that is completely negative; in contrast, nitrosobenzylphenylamine is a weak, but definite, esophageal carcinogen in rats. NDBzA is not mutagenic to bacteria in the presence or absence of rat liver microsomes.
Although there is no information about metabolism and activation of NDBzA, the alpha-acetoxy derivative (which presumably is the ester of the alpha-hydroxy derivative that would be formed in vivo) is both carcinogenic to rats and mutagenic to bacteria.