1,4-Dimethoxybenzene
![1,4-Dimethoxybenzene Structure](CAS/GIF/150-78-7.gif)
- CAS No.
- 150-78-7
- Chemical Name:
- 1,4-Dimethoxybenzene
- Synonyms
- DIMETHYLHYDROQUINONE;dimethoxybenzene;P-DIMETHOXYBENZENE;4-Methoxyanisole;1,4-dimethoxy-benzen;1,4-dimethoxybezene;1,4-Dimethoxybenzol;HYDROQUINONE DIMETHYL ETHER;1,3-Bis(hydroxymethyl)-2-benzimidazolinone;NSC 7483
- CBNumber:
- CB7253689
- Molecular Formula:
- C8H10O2
- Molecular Weight:
- 138.16
- MOL File:
- 150-78-7.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/8/21 22:41:43
Melting point | 54-56 °C(lit.) |
---|---|
Boiling point | 213 °C(lit.) |
Density | 1.053 g/mL at 25 °C(lit.) |
vapor density | 4.8 (vs air) |
vapor pressure | <1 mm Hg ( 20 °C) |
refractive index | 1.5231 (estimate) |
FEMA | 2386 | P-DIMETHOXYBENZENE |
Flash point | 98 °C |
storage temp. | Sealed in dry,Room Temperature |
solubility | dioxane: 0.1 g/mL, clear |
form | Crystalline Powder, Crystals, or Flakes |
color | White |
Specific Gravity | 1.053 |
PH | 7 (H2O, 20℃)(saturated solution) |
Odor | at 1.00 % in dipropylene glycol. sweet green new mown hay fennel |
Odor Type | green |
explosive limit | 1.2-5.6%(V) |
Water Solubility | 0.8 g/l (20 ºC) |
Sensitive | Light Sensitive |
JECFA Number | 1250 |
BRN | 774605 |
Dielectric constant | 4.5(23℃) |
Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
LogP | 2.08 at 20℃ |
CAS DataBase Reference | 150-78-7(CAS DataBase Reference) |
NIST Chemistry Reference | Benzene, 1,4-dimethoxy-(150-78-7) |
EPA Substance Registry System | p-Dimethoxybenzene (150-78-7) |
SAFETY
Risk and Safety Statements
Symbol(GHS) | ![]() GHS07 |
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Signal word | Warning | |||||||||
Hazard statements | H315-H319 | |||||||||
Precautionary statements | P280g-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 | |||||||||
Hazard Codes | Xi | |||||||||
Risk Statements | 36/37/38 | |||||||||
Safety Statements | 26-36-24/25 | |||||||||
WGK Germany | 1 | |||||||||
RTECS | CZ6650000 | |||||||||
Autoignition Temperature | 1463 °F | |||||||||
TSCA | Yes | |||||||||
HS Code | 29093090 | |||||||||
NFPA 704 |
|
1,4-Dimethoxybenzene price More Price(18)
Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
---|---|---|---|---|---|---|---|
Sigma-Aldrich(India) | W238600 | 1,4-Dimethoxybenzene 99%, FG | 150-78-7 | 1SAMPLE-K | ₹5141.88 | 2022-06-14 | Buy |
Sigma-Aldrich(India) | W238600 | 1,4-Dimethoxybenzene 99%, FG | 150-78-7 | 1KG | ₹7804.83 | 2022-06-14 | Buy |
Sigma-Aldrich(India) | W238600 | 1,4-Dimethoxybenzene 99%, FG | 150-78-7 | 5KG | ₹27300.65 | 2022-06-14 | Buy |
Sigma-Aldrich(India) | W238600 | 1,4-Dimethoxybenzene 99%, FG | 150-78-7 | 10KG | ₹46211.93 | 2022-06-14 | Buy |
Sigma-Aldrich(India) | D131350 | 1,4-Dimethoxybenzene ReagentPlus?, 99% | 150-78-7 | 100G | ₹4892.9 | 2022-06-14 | Buy |
1,4-Dimethoxybenzene Chemical Properties,Uses,Production
Chemical Properties
white crystals or powder
Occurrence
Reported found in hyacinth (Hyacinthus orientalis L.) essential oil, Rhodophyllus icterius, papaya, peppermint oil, green tea, cherimoya and cooked shrimp
Uses
1,4-Dimethoxybenzene is used as Pharmaceutical Intermediate. It is used in some paints and as a diazo dye. It is also used in perfumes and flavors in order to its floral odor. In addition, it is used on greasy skin, and with sulfur to treat acne, or as a dandruff treatment.
Preparation
By methylation of hydroquinone using dimethyl sulfate and alkali.
General Description
Colorless crystals.
Air & Water Reactions
Slightly water soluble .
Reactivity Profile
1,4-Dimethoxybenzene is an ether. Ethers may react violently with strong oxidizing agents. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert.
Synthesis
An aqueous solution of sodium hydroxide (40%,175 ml) is added dropwiseduring 3 hr at 18-22° to a well stirred mixture of hydroquinone (50 g,0.45mole),sodium hydrosulphite (2.0 g,0.115 mole), dimethyl sulphate (110ml,146.63 g,1.16 mole) and alcohol (150 ml). Ice (1 kg) is added and the reaction mixture left overnight at room temperature. It is extracted withether (2 × 200 ml). The ether extract is washed with water,dried(anhydrous sodium sulphate) and distilled.1,4-Dimethoxy benzene isobtained as an oil. Yield 52.75 g (84.1%).It solidifies on cooling and iscrystallised from ether-petroleum ether as shining needles. M.p. 55-56°.
Purification Methods
Steam distil 1,4-dimethoxybenzene, then crystallise it from hexane or *benzene, and from MeOH or EtOH, but these are wasteful due to high solubilities. Dry it under vacuum. It also sublimes under vacuum. [Beilstein 6 IV 5718.]
1,4-Dimethoxybenzene Preparation Products And Raw materials
Raw materials
Preparation Products
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Supplier | Advantage |
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GLR Innovations | 58 |
Vihita Chem Private Limited | 58 |
JAY CHEMICALS | 58 |
AMINO ORGANICS | 58 |
JSK Chemicals | 58 |
Otto Chemie Pvt Ltd | 58 |
Yasho Industries Ltd | 58 |
Dr. ASCRO Bio Sciences Private Limited | 58 |
Urmila Chemopharma | 58 |
Shreeji Aroma | 58 |
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