Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4,5-Dimethoxycyclohexa-3,5-diene-1,2-dione
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3,4-Dimethoxycyclohexa-2,4-diene-1,6-dione
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

21086-65-7

21086-65-7 structure

21086-65-7 structure

Name: 3,4-Dimethoxycyclohexa-2,4-diene-1,6-dione
Chemical Name: 4,5-dimethoxycyclohexa-3,5-diene-1,2-dione
CAS Number: 21086-65-7
Molecular Formula: C₈H₈O₄
Molecular Weight: 168.14700
Create Date: 2018-12-30 11:29:46
Modify Date: 2025-08-27 06:45:03

Name	4,5-dimethoxycyclohexa-3,5-diene-1,2-dione
Synonyms	3,2-dione,4,5-dimethoxy 4,5-dimethoxy-3,5-cyclohexadiene-1,2-dione dimethoxy-4,5 benzoquinone-1,2 4,5-dimethoxy-3,5-cyclohexadien-1,2-dione 4,5-dimethoxy-1,2-benzoquinone 4,5-Dimethoxy-o-benzoquinone 4,5-dimethoxy-o-quinone 4,5-dimethoxy-1,1-benzoquinone

Density	1.24g/cm3
Boiling Point	324.3ºC at 760mmHg
Melting Point	226-230ºC
Molecular Formula	C₈H₈O₄
Molecular Weight	168.14700
Flash Point	146.2ºC
Exact Mass	168.04200
PSA	52.60000
LogP	0.19880
Vapour Pressure	0.000247mmHg at 25°C
Index of Refraction	1.503

Risk Phrases	R36/37/38
Safety Phrases	26-36/37/39
HS Code	2914690090

Precursor 9
67-56-1 108-95-2 115320-11-1 1664-27-3
583-63-1 120-80-9 598-32-3 91-16-7
115060-94-1
DownStream 10
21086-74-8 2441-46-5 615-94-1 71678-03-0
3117-03-1 1664-27-3 13239-13-9 121994-56-7
82511-11-3 82511-18-0

HS Code	2914690090
Summary	2914690090 other quinones。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

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