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Current Position: Home > Dictionary EN > V > 121-33-5

Vanillin 121-33-5

Chemical Name Vanillin
CAS Registry Number 121-33-5
PubChemID 1183
Molecular Weight 152.14732
PSA 46.53000
LogP 1.21330
EINECS 204-465-2
Molecular Formula C8H8O3
 
121-33-5 Properties
Density 1.06
Boiling Point 170℃ (15 mmHg)
Flash Point 147℃
Melting Point 81-84℃
Appearance White or very slightly yellow needles
Vapour 0.00194mmHg at 25°C
Refractive Index 1.555
Solubility methanol: 0.1 g/mL, clear
Color/Form White to pale yellow
Stability Stable. May discolour on exposure to light. Moisture-sensitive. Incompatible with strong oxidizing agents, perchloric acid.
HS Code 29124100
Storage temp Store in a cool, dry place. Store protected from moisture. Store protected from light.
Spectral properties MAX ABSORPTION (ALCOHOL): 279 NM (LOG E= 4.01); 309 NM (LOG E= 4.02)
SADTLER REFERENCE NUMBER: 8703 (IR, PRISM)
MAX ABSORPTION (0.1 N HYDROCHLORIC ACID): 247 NM, 309 NM
IR: 2530 (Coblentz Society Spectral Collection)
UV: 3-153 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York)
NMR: 197 (Varian Associates NMR Spectra Catalogue)
MASS: 905 (Atlas of Mass Spectral Data, John Wiley & Sons, New York)
NMR: 107 (Varian Associates NMR Spectra Catalogue)
 
121-33-5 Safety Infomation
Safety Statements S22;S24/25
Risk Statements R22
Hazard Codes Xn
Safety

Hazard Codes: Xn,Xi
Risk Statements:?22-36/37/38
22:?Harmful if swallowed
36/37/38:?Irritating to eyes, respiratory system and skin
Safety Statements:?24/25-22-37/39-26
24/25:?Avoid contact with skin and eyes?
22: Do not breathe dust?
37/39:?Wear suitable gloves and eye/face protection?
26:?In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
WGK Germany:? 1
RTECS: YW5775000
HS Code: 29124100

Toxicity LD50 orally in rats, guinea pigs: 1580, 1400 mg/kg (Jenner)
Sensitive Air & Light Sensitive
Skin, Eye, and Respiratory Irritations ...highly irritating action on the eyes and mucous membranes of the respiratory tract. /Aldehydes/
Cleanup Methods SORPTION OCCURRED ON DISSOCIATED MG IONS, FORMING INSOL CHEMISORB PRODUCTS. SORPTION OF VANILLIN & VANILLIC ALC DIFFER DUE TO DIFFERENCE IN ELECTRON TRANSFERENCE.
Fire Potential FLAMMABILITY PROPERTIES OF SOME SYNTHETIC FRAGRANT SUBSTANCES & INTERMEDIATE PRODUCTS.
Formulations/Preparations Grades: Technical, USP, FCC
NF/FCC crystal grades
Exposure Standards and Regulations Synthetic flavoring substances and adjuvants /for human consumption/ that are generally recognized as safe for their intended use, withn the meaning of section 409 of the Act. Vanillin is included on this list.
Substances migrating to food from paper and paperboard products used in food packaging that are generally recognized as safe for their intended use, within section 409 of the Act. Vanillin is included on this list.
Reactivities and Incompatibilities A VIOLENT REACTION OCCURRED WHEN SMALL AMT OF VANILLIN WAS ADDED TO THALLIUM TRINITRATE TRIHYDRATE (UP TO 50%) IN 90% FORMIC ACID.
Can react violently with Br2; HClO4; potassium-tert-butoxide; tert-chlorobenzene + NaOH; formic acid + thallium nitrate.
Other Preventative Measures SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.
Protective Equipment and Clothing ...highly irritating action on the eyes and mucous membranes of the respiratory tract. /Aldehydes/
Specification

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dangerous fire hazard in the form of dust when exposed to heat or flame.
Extinguishing Media: In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.?
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Store in a cool, dry place. Store in a tightly closed container. Store under an inert atmosphere.

Octanol/Water Partition Coefficient log Kow = 1.37
Disposal Methods SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.
 
 
 
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