Molekula
1,3-Benzodioxole (1,2-Methylenedioxybenzene)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1,3-Benzodioxole, also known as 1,2-methylenedioxybenzene, is a versatile organic compound used in pharmaceutical synthesis and fragrance chemistry. It features a benzene ring fused with a methylenedioxy group, contributing to its stability and reactivity in aromatic substitution reactions. Supplied as a liquid, it has a molecular weight of 122.12 g/mol, a CAS number of 274-09-9, and should be stored at ambient temperatures. It carries a warning signal word due to potential health hazards. Molekula supplies 1,3-Benzodioxole from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £51.40 per pack ex VAT · £61.68 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to brown/yellow liquid |
| Colour (Pt-Co) | <100 |
| Water | <0.05% |
| Assay | >99% |
| Dichloromethane | <0.01% |
| High Boiling Component | <0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 61 °C |
| Transport Class | 3 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.57 mmHg |
Source: PubChem CID 9229 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 77096333 |
| CAS Number | 274-09-9 |
| IUPAC Name | 1,3-benzodioxole |
| EC Number | 205-992-0 |
| Molecular Formula | C7H6O2 |
| Molecular Weight | 122.12 |
| Exact Mass | 122.0368 |
| SMILES | C1OC2=CC=CC=C2O1 |
| InChIKey | FTNJQNQLEGKTGD-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6O2/c1-2-4-7-6(3-1)8-5-9-7/h1-4H,5H2 |
| PubChem CID | 9229 |
| UN Number | UN1993 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2932.99.70.00 |
| Tariff Code | 2932990090 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
Hazard statements
- H226 Flammable liquid and vapour
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P302+334 IF ON SKIN: Immerse in cool water/wrap in wet bandages
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,2-Methylenedioxybenzene
- 1,3-Benzodioxolane
- 1,3-Dioxaindan
- 2H-1,3-Benzodioxole
- 3,4-Methylenedioxybenzene
- Benzene, 1,2-(methylenebis(oxy))-
- Benzo[d][1,3]dioxole
- Benzodioxole
- Methylenedioxybenzene
- o-(Methylenedioxy)benzene
Frequently asked questions
What is 1,3-Benzodioxole used for?
It is primarily used as a synthetic intermediate in the production of pharmaceuticals and fragrances.
What is the chemical formula and molecular weight of 1,3-Benzodioxole?
The formula is C7H6O2 with a molecular weight of 122.12 g/mol.
How should 1,3-Benzodioxole be stored?
Store at ambient temperature, away from light and incompatible materials.
What grade is available for 1,3-Benzodioxole?
Available in technical grade; custom purity levels may be requested.
Can Molekula supply 1,3-Benzodioxole in bulk?
Yes, bulk quantities are available upon request; please contact our sales team for details.
What documentation comes with an order of 1,3-Benzodioxole?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.