Methacrolein
- CAS No.
- 78-85-3
- Chemical Name:
- Methacrolein
- Synonyms
- 2-METHYL-2-PROPENAL;METHACRYLALDEHYDE;Isobutenal;Methylacrolein;2-Methylprop-2-enal;nsc8260;Metharolein;METHACROLEIN;CH2=C(CH3)CHO;Methacraldehyde
- CBNumber:
- CB6168146
- Molecular Formula:
- C4H6O
- Molecular Weight:
- 70.09
- MOL File:
- 78-85-3.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/5/25 18:01:14
| Melting point | -81 °C |
|---|---|
| Boiling point | 69 °C |
| Density | 0.85 g/mL at 25 °C(lit.) |
| vapor density | 2.4 (vs air) |
| vapor pressure | 121 mm Hg ( 20 °C) |
| refractive index |
n |
| Flash point | 5 °F |
| storage temp. | 2-8°C |
| solubility | Benzene (Slightly), Chloroform (Soluble), Methanol (Soluble) |
| form | Liquid |
| color | Pale yellow |
| Odor | at 0.01 % in dipropylene glycol. wild hyacinth foliage |
| Odor Type | floral |
| Odor Threshold | 0.0085ppm |
| Water Solubility | 6 g/100 mL (20 ºC) |
| Sensitive | Light Sensitive |
| BRN | 1209258 |
| Exposure limits |
ACGIH: TWA 1 mg/m3 OSHA: TWA 2 mg/m3 NIOSH: IDLH 50 mg/m3; Ceiling 2 mg/m3 |
| Stability | Stable. Incompatible with strong bases, strong oxidising agents, strong reducing agents. Light and air-sensitive. Hazardous polymerisation may occur. |
| InChIKey | STNJBCKSHOAVAJ-UHFFFAOYSA-N |
| LogP | 0.9 at 23℃ |
| CAS DataBase Reference | 78-85-3(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Propenal, 2-methyl-(78-85-3) |
| EPA Substance Registry System | Methacrolein (78-85-3) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |      GHS02,GHS05,GHS06,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H301+H311-H314-H330-H341-H410 | |||||||||
| Precautionary statements | P210-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | F,T | |||||||||
| Risk Statements | 11-24/25-34-26 | |||||||||
| Safety Statements | 16-26-36/37/39-45-28A | |||||||||
| RIDADR | UN 2396 3/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | OZ2625000 | |||||||||
| F | 8-23 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29121900 | |||||||||
| NFPA 704 |
|
Methacrolein price More Price(5)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 133035 | Methacrolein 95% | 78-85-3 | 5ML | ₹6679.03 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 133035 | Methacrolein 95% | 78-85-3 | 25ML | ₹28545.53 | 2022-06-14 | Buy |
| TCI Chemicals (India) | M0078 | Methacrolein (stabilized with HQ) min. 90.0 % | 78-85-3 | 25ML | ₹4200 | 2022-05-26 | Buy |
| TCI Chemicals (India) | M0078 | Methacrolein (stabilized with HQ) min. 90.0 % | 78-85-3 | 100ML | ₹7000 | 2022-05-26 | Buy |
| TCI Chemicals (India) | M0078 | Methacrolein (stabilized with HQ) min. 90.0 % | 78-85-3 | 500ML | ₹21000 | 2022-05-26 | Buy |
Methacrolein Chemical Properties,Uses,Production
Chemical Properties
colourless to light yellow liquid
Uses
Methacrolein was used to study the effect of parts per billion levels of limonene oxidation products and the terpene oxidation product, methacrolein on human eye blink frequency. It was also used in determination of rate constants and the products of the reactions between atomic chlorine and acrolein, methacrolein and methyl vinyl ketone.
General Description
A colorless liquid. Flash point 35°F. Less dense than water. May be toxic by ingestion, inhalation and skin absorption. Severely irritating to skin and eyes. Used to make plastics.
Air & Water Reactions
Highly flammable. Soluble in water.
Reactivity Profile
Methacrolein is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.
Hazard
Flammable, dangerous fire risk. Strong irritant.
Health Hazard
TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Inhalation or contact with some of these materials will irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
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 and poison hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Safety Profile
Poison by ingestion and sktn contact. Moderately toxic by inhalation. Severe eye and skin irritant. Mutation data reported. Dangerously flammable liquid when exposed to heat, flame, or oxidizers. Can react vigorously with oxidizing materials. To fight fire, use CO2, alcohol foam, foam, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.
Purification Methods
Fractionally distil it under nitrogen through a short Vigreux column (p 11). Store it in sealed ampoules. (Slight polymerisation may occur.) [Beilstein 1 IV 3455.]
Methacrolein Preparation Products And Raw materials
Raw materials
Preparation Products
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|---|---|---|---|---|---|
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Clearsynth Labs | 91-22-45045900 | Maharashtra, India | 3889 | 58 | Inquiry |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 | China | 16209 | 58 | Inquiry |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21669 | 55 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29897 | 58 | Inquiry |
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | China | 39916 | 58 | Inquiry |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | China | 49391 | 58 | Inquiry |
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