English Name

2,3-Butanedione

Alias name

Diacetyl

CAS No.

431-03-8

UN No.

2346

EINECS accession No.

207-069-8

FEMA accession No.

2370

Molecular formula

CH3CO-COCH3
     C4H6O2；CH3COCOCH3

Chemical formula

Molecular weight

86.09

Safety instruction

S16： Keep away from  fire.
     S26： Once contact occurs with eyes,flush immediately with plenty of  water ,and hospital treatment.
     S36/37/39：Wear appropriate protective clothing and gloves

Dangerous mark

F：Flammable substance
Xn：Harmful substance

Risk code

R11：Highly inflammable
     R20/21/22： Harmful by inhalation, skin contact and accidental swallowing.
     R36/38：Irritant to eyes and skin

Physical and chemical indexes

Color

Light yellow to yellow green liquid

Physical form

Liquid

Flavor

Strong butter aroma in very dilute solution

Flash point

 6℃

Melting point

-3~-4℃

Boiling Point

88~91℃

(25℃/25℃)Relative density

0.978~0.988g/cm3

（20℃）Refractive index

1.3920~1.3980

content（w/%）

≥98.0    Lezhen content≥99.0

Storage temp.

﹤18℃

Solubility

Soluble in water, ethanol, ether

Application

Flavoring agent for cream, margarine, cheese and candy, hardening agent for gelatin
It is used as the main raw material for the production of pyrazine spices. It is mainly used for the preparation of cream, cheese flavor and coffee flavor. It's a sweetener for cream, margarine, coolness and candy.It is also used as gelatin hardener and photographic binder.
It is mainly used for the preparation of food flavors. It is the main flavor of cream flavor, and can also be used in milk, cheese and other flavors. Such as berries, caramel, chocolate, coffee, cherry, vanilla, honey, cocoa, fruit, wine, tobacco, rum, nuts, almonds, ginger and so on. It can also be used in cosmetic fresh fruit flavors or new flavors. It is used as solvent and organic synthesis intermediate.
It is an important reagent for the identification of nickel.

Storage

The shelf life of the product is one year after the date of packaging, provided that it is kept in original unopened.
Storage: cool, dry, ventilated, temperature < 18 ℃.
Warehouse ventilation and low temperature drying; stored separately from oxidant

Package