Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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4-Hydroxy-3-methoxybenzaldehyde(121-33-5)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
4-Hydroxy-3-methoxybenzaldehyde
Synonyms
4-Formyl-2-methoxyphenol
4-Hydroxy-3-methoxybenzaldehyde
p-Hydroxy-m-methoxybenzaldehyde
Rhovanil
Vanillaldehyde
Vanillic aldehyde
CAS
121-33-5
Formula
C8H8O3
Molecular Weight
152.15
EINECS
204-465-2
RTECS
YW5775000
RTECS Class
Mutagen; Reproductive Effector; Natural Product
Merck
12,10069
Beilstein/Gmelin
472792
Beilstein Reference
4-08-00-01763

Physical and Chemical Properties

Appearance
White or very slightly yellow needles.
Solubility in water
10 g/L
Melting Point
82
Boiling Point
285
Vapor Pressure
0.0019 (25 C)
Density
1.056 g/cm3 (20 C)
pKa/pKb
7.78 (pKa)
Partition Coefficient
1.37
Heat Of Vaporization
54.3 kJ/mol
Heat Of Combustion
-1850 kJ/mol
Usage
Flavoring agent in galenicals, in perfumery, reagent in analytical chemistry, pharmaceutic aid (flavor).
Vapor Density
5.2
Refractive Index
1.555

First Aid Measures

Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Treat symptomatically and supportively. Get medical aid if irritation or symptoms occur.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
Skin
Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage
Store in a cool, dry place. Store protected from moisture. Store protected from light.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Store protected from light.

Hazards Identification

Ingestion
May cause irritation of the digestive tract.
Inhalation
No hazard expected in normal industrial use. Dust is irritating to the respiratory tract.
Skin
Dust may cause mechanical irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Low hazard for usual industrial handling.
Eyes
Dust may cause mechanical irritation. Low hazard for normal industrial handling.
EC Risk Phrase
R 22
EC Safety Phrase
S 22 36/37

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Exposure limit(s)
OSHA Permissible Exposure Limit (PEL): 15 mg/m3 total dust, 5 mg/m3 respirable fraction for nuisance dusts.
Poison Class
4

Fire Fighting Measures

Flash Point
118
Autoignition
> 400
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.
Upper exp. limit
8.8
Lower exp. limit
1.2
Fire Potential
Flammability properties of some synthetic fragrant substances and intermediate products.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Provide ventilation.

Stability and Reactivity

Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong bases, light, air, strong reducing agents, moisture, bromine, perchloric acid, potassium t-butoxide, t-chlorobenzene and sodium hydroxide, formic acid and thallium nitrate.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

HS Code
2912 41 00
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