Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy-
Price: Check
Purity: 97.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy-
Price: ￥2376.0/5g ￥8346.0/25g ￥316.0/250mg ￥786.0/1g
Purity: 95.0%
Stocking Period: 2 Day
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

6641-32-3

6641-32-3 structure

6641-32-3 structure

Name: 3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy-
Chemical Name: 4,5-dichloro-1,2-dihydropyridazine-3,6-dione
CAS Number: 6641-32-3
Molecular Formula: C₄H₂Cl₂N₂O₂
Molecular Weight: 180.97700
Create Date: 2018-05-08 08:00:00
Modify Date: 2025-09-08 14:36:54

Name	4,5-dichloro-1,2-dihydropyridazine-3,6-dione
Synonyms	4,5-DICHLORO-1,2,3,6-TETRAHYDROPYRIDAZINE-3,6-DIONE dichloropyridazine-3,6-diol 4,5-dichloro-1,2-dihydro-pyridazine-3,6-dione 4,5-dichloropyridazine-3,6-diol 4,5-Dichlor-1,2-dihydro-pyridazin-3,6-dion

Density	1.76g/cm3
Boiling Point	413.5ºC at 760 mmHg
Melting Point	295ºC
Molecular Formula	C₄H₂Cl₂N₂O₂
Molecular Weight	180.97700
Flash Point	203.9ºC
Exact Mass	179.94900
PSA	65.98000
LogP	0.78230
Index of Refraction	1.602

HS Code	2933990090

1122-17-4 structure

1122-17-4

~88%

6641-32-3 structure

6641-32-3

Literature: Ewing, William R.; Zhu, Yeheng; Ellsworth, Bruce A. Patent: US2006/287323 A1, 2006 ; Location in patent: Page/Page column 7 ; US 20060287323 A1

Precursor 1
1122-17-4
DownStream 0

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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