Benzaldehyd

Product Name:

Benzaldehyd

CAS:

100-52-7

MF:

C7H6O

MW:

106.12

EINECS:

202-860-4

Mol-fil:

100-52-7.mol

Smeltepunkt

-26 ° C

Kokepunkt

179 ° C

tetthet

1.044 g/cm 3 at 20 °C(lit.)

vapor density 

3.7 (vs air)

damptrykk

4 mm Hg (45 ° C)

FEMA

2127 | BENZALDEHYDE

brytningsindeks

n20/D 1.545(lit.)

Fp 

145 °F

lagringstemperatur

romtemperatur

løselighet

H2O: soluble100mg/mL

pka

14.90(at 25℃)

form 

neat

Odor

Like almonds.

PH

5,9 (1 g / l, H2O)

explosive limit

1.4-8.5%(V)

Vannløselighet

<0,01 g / 100 ml ved 19,5 ºC

Frysepunktet

-56â „ƒ

Følsom

Luftfølsom

JECFA-nummer

22

Merck 

14,1058

BRN 

471223

Stabilitet:

Stable. Combustible. Incompatible with strong oxidizing agents, strong acids, reducing agents, steam. Air, light and moisture-sensitive.

InChIKey

HUMNYLRZRPPJDN-UHFFFAOYSA-N

CAS DataBase Referanse

100-52-7(CAS DataBase Reference)

NIST Chemistry Reference

Bensaldehyd (100-52-7)

EPA Substance Registry System

Bensaldehyd (100-52-7)

Hazard Codes 

Xn

Risk Statements 

22

Sikkerhetserklæringer

24

RIDADR

FN 1990 9 / PG 3

WGK Germany 

1

RTECS 

CU4375000

F 

8

Autoignition Temperature

374 °F

TSCA 

Yes

HS kode

2912 21 00

HazardClass 

9

PackingGroup

III

Data om farlige stoffer

100-52-7 (data om farlige stoffer)

Toksisitet

LD50 in rats, guinea pigs (mg/kg): 1300, 1000 orally (Jenner)

Bruker

Benzaldehyde is used as an intermediatein the production of flavoring chemicals,such as cinnamaldehyde, cinnamalalcohol,and amyl- and hexylcinnamaldehyde for perfume,soap, and food flavor; synthetic penicillin,ampicillin, and ephedrine; and as araw material for the herbicide Avenge. Itoccurs in nature in the seeds of almonds,apricots, cherries, and peaches. It occurs intrace amounts in corn oil.

Bruker

Manufacture of dyes, perfumery, cinnamic and mandelic acids, as solvent; in flavors.

Bruker

Benzaldehyd er et smaksstoff som er flytende og fargeløst, og har en mandellignende lukt. Det har en varm (brennende) smak. den oksyderes til benzoesyre når den utsettes for luft og forringes under lys. det er blandbart i flyktige oljer, faste oljer, eter og alkohol; den er lite løselig i vann. det oppnås ved kjemisk syntese og ved naturlig forekomst i oljer av bitter mandel, fersken og aprikoskjerne. det kalles også benzosaldehyd.

Definition

A yellow organic oil with a distinct almondlike odor. Benzenecarbaldehyde undergoes the reactions characteristic of aldehydes and may be synthesized in the laboratory by the usual methods of aldehyde synthesis. It is used as a food flavoring and in the manufacture of dyes and antibiotics, and can be readily manufactured by the chlorination of methylbenzene and the subsequent hydrolysis of (dichloromethyl) benzene: C6H5CH3 + Cl2→C6H5CHCl2 C6H5CHCl2 + 2H2O →C6H5CH(OH)2+ 2HCl C6H5CH(OH)2 →C6H5CHO + H2O.

Aroma terskelverdier

Detection: 100 ppb to 4.6 ppm; Recognition: 330 ppb to 4.1 ppm.

Smakterskelverdier

Smakskarakteristika ved 50 ppm: søt, fet, mandel, kirsebær, nøtteaktig og treaktig

Generell beskrivelse

En klar fargeløs lekegul væske med en bitter mandellukt. Flammepunkt nær 145 ° F. Mer tett enn vann og uoppløselig i vann. Derfor synker i vann. Damp er tyngre enn luft. Den primære faren er for miljøet. Umiddelbare grep bør tas for å begrense spredning til miljøet. Trenger lett inn i jorden for å forurense grunnvann og nærliggende vannveier. Brukes i smaksstoffer og parfyme.

Luft- og vannreaksjoner

Oksiderer i luft for å danne benzosyre, som er moderat giftig ved svelging. Uoppløselig i vann.

Reactivity Profile

En ikke-giftig, brennbar væske, reagerer med oksiderende reagenser. Benzaldehyd må tildekkes med en inert gass til enhver tid siden benzaldehyd oksyderes lett med luft til benzosyre [Kirk-Othmer, 3. utg., Vol. 3, 1978, s. 736]. Ved kontakt med sterke syrer eller baser vil benzaldehyd gjennomgå en eksotermisk kondensasjonsreaksjon [Sax, 9. utg., 1996, s. 327]. En voldsom reaksjon ble observert ved kontakt med peroksysyrer (peroksyformsyre) [DiAns, J. et al., Ber., 1915, 48, s. 1136]. En eksplosjon skjedde da pyrrolidin, benzaldehyd og propionsyre ble oppvarmet for å danne porfyriner.

Hazard

Meget giftig.

Helserisiko

Benzaldehyde exhibited low to moderate toxicityin test animals, the poisoning effectdepending on dosage. Ingestion of 50–60 mLmay be fatal to humans. Oral intake of a largedose can cause tremor, gastrointestinal pain,and kidney damage. Animal experimentsindicated that ingestion of this compoundby guinea pigs caused tremor, bleeding fromsmall intestine, and an increase in urine volume;in rats, ingestion resulted in somnolenceand coma.
LD50-verdi, oralt (marsvin): 1000 mg / kg
LD50-verdi, oral (rotter): 1300 mg / kg
A 500-mg amount for a 24-hour periodresulted in moderate skin irritation in rabbits.Because of its low toxicity, high boilingpoint, and low vapor pressure, the healthhazard to humans from exposure to benzaldehydeis very low.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Chemical Reactivity

Reactivity with Water: No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Sikkerhetsprofil

Poison by ingestion and intraperitoneal routes. Moderately toxic by subcutaneous route. An allergen. Acts as a feeble local anesthetic. Local contact may cause contact dermatitis. Causes central nervous system depression in small doses and convulsions in larger doses. A skin irritant. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. Combustible liquid. To fight fire, use water (may be used as a blanket), alcohol, foam, dry chemical. A strong reducing agent. Reacts violently with peroxyformic acid and other oxidizers. See also ALDEHYDES.

Chemical Synthesis

Natural benzaldehyde is obtained by extraction and subsequent fractional distillation from botanical sources; synthetically, from benzyl chloride and lime or by oxidation of toluene

Potential Exposure

Ved fremstilling av parfymer, fargestoffer og kanelsyre; som løsningsmiddel; i smaker.

Oppbevaring

Benzaldehyde should be kept stored in a tightly closed container and protected against physical damage. Storage of the chemical substance outside or in a detached area is preferred, whereas inside storage should be in a standard flammable liquids storage room or cabinet. Benzaldehyde should be kept separated from oxidizing materials. Also, storage and use areas should be no smoking areas. Containers of this material may be hazardous when empty since they retain product residues (vapors, liquid); observe all warnings and precautions listed for the product

Shipping

UN1990 benzaldehyd, fareklasse: 9; Etiketter: 9 - Diverse farlige stoffer.

Purification Methods

For å redusere oksidasjonshastigheten inneholder benzaldehyd vanligvis tilsetningsstoffer som hydrokinon eller katekol. Det kan renses via bisulfitt-tilsetningsforbindelsen, men destillasjon (under nitrogen ved redusert trykk) er vanligvis tilstrekkelig. Før destillasjonen vaskes den med NaOH eller 10% Na2CO3 (til ikke mer CO2 er utviklet), deretter med mettet Na2SO3 og H2O, etterfulgt av tørking med CaSO4, MgSO4 eller CaCl2. [Beilstein 7 IV 505.]

Incompatibilities

The substance reacts with air, forming explosive peroxides. Reacts violently with performic acid, oxidants, aluminum, iron, bases, and phenol, causing fire and explosion hazard. May self-ignite if absorbed in combustible material with large surface area, or otherwise dispersed over large areas. Reacts with rust, amines, alkalies, strong bases, reducing agents such as hydrideds and active metals.

Waste Disposal

Incineration; add combustible solvent and spray into incinerator with afterburner.

Forholdsregler

Workers should be careful when using benzaldehyde because there is a risk of spontaneous combustion. It may ignite spontaneously if it is absorbed onto rags, cleaning cloths, clothing, sawdust, diatomaceous earth (kieselguhr), activated charcoal, or other materials with large surface areas in workplaces. Workers should avoid handling the chemical substance and should not cut, puncture, or weld on or near the container. Exposure of benzaldehyde to air, light, heat, hot surfaces such as hot pipes, sparks, open flames, and other ignition sources should be avoided. Workers should wear proper personal protective clothing and equipment

Forberedelsesprodukter

2,3,5-trifenyltetrazoliumklorid -> blekemiddel WG for ull -> Benzalaceton -> 3,5-DIFENYLPYRAZOL -> Epalrestat -> Bis (dibenzylidenaceton) palladium -> 2- [2- (4- Fluorfenyl) -2-okso-1-fenyletyl] -4-metyl-3-okso-N-fenylpentanamid -> L-argininhydroklorid -> 2- (acetylamino) -3-fenyl-2-propeninsyre -> metyl 1H-indol-2-karboksylat -> TRANS-2-FENYL-1-CYKLOPROPANKARBOKSYLIKASYRE -> 1-AMINO-4-METYLPIPERAZINEDIHYDROCHLORIDE MONOHYDRATE -> Acid Blue 90 -> Diaveridine -> Nifedipine -> 3,4-diklorbenzylamin -> Tris (dibensylidenaceton) dipalladium -> Nitrotetrazoliumblått klorid -> BENZYLHYDRAZINE DIHYDROCHLORIDE -> (R) - (+) - N-Benzyl-1-fenylethylamine -> 2- ((E) -2-hydroksy-3-fenylakryloyl) benzosyre, 97% -> (E) -3-benzyliden-3H-isokromen-1,4-dion, 97% -> Reaktiv blå BRF -> FLAVANONE -> L-fenylglycin -> Benzenmetanol, ar-metyl-, acetat -> ASTRAZON BRILLIANT RED 4G -> 2-amino-5-klor-difenylmetanol -> Magentagreencrystals -> Acid Blue 9 -> alfa-heksylcinnamaldehyd -> DL-Mandelic syre -> N, N'-BISBENSYLIDENBENZIDIN -> 2,4,5-TRIFENYLIMIDAZOL -> 4-hydroksybenzylidenaceton -> 5,5-difenylhydantoin -> 1- [2- [2-hydroksy-3- ( propylamino) propoksy] fenyl] -3-fenylpropan-1-onhydroklorid -> N, N'-dibensyletylendiamindiacetat -> 2-FENYL-1,3-DIOXOLAN-4-METANOL

Raw materials

Toluene-->Sodium carbonate-->Palladium-->Chlorine-->Benzyl chloride-->Zinc oxide-->CARBON MONOXIDE-->Aluminium chloride hexahydrate-->Benzyl alcohol-->Molybdenum trioxide-->Ozone-->trans-Cinnamaldehyde-->Zinc phosphate-->Cinnamon oil-->Amygdalin