Piperonal

  • 1,3-Benzodiolole-5-carboxaldehyde
  • 3,4-(Methylenedioxy)benzaldehyde
  • Piperonaldehyde
  • Heliotropine
Formula
C8H6O3
Structure
Description
Colorless lustrous crystals.
Uses
Has been used as pediculicide.

Registry Numbers and Inventories.
CAS
120-57-0
EC (EINECS/ELINCS)
204-409-7
R 36/37/38
RTECS
TO1575000
RTECS class
Agricultural Chemical and Pesticide; Mutagen; Primary Irritant
UN (DOT)
1988
Merck
12,7628
Beilstein/Gmelin
131691
Beilstein Reference
5-19-04-00225
Swiss Giftliste 1
G-3178
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H6O3
Formula mass
150.13
Melting point, °C
35 - 36
Boiling point, °C
265
Vapor pressure, mmHg
0.01 (25 C)
Density
1.2792 g/cm3 (43.2 C)
Solubility in water
Slightly soluble
Surface tension
46.26 g/s2 (43.2 C)
Partition coefficient, pKow
1.05
Heat of vaporization
50.1 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a tightly closed container. Store protected from light and air.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.
Stability
Stable under normal temperatures and pressures. Substance may undergo color change upon exposure to light and air.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
103
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Fire potential
This material is probably combustible.
Hazards
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 and poison hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause irritation of the digestive tract. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure.
   Inhalation
Inhalation of dust may cause respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Dust may cause mechanical irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1988
Response guide
Hazard class
3
Packing Group
I; II; III