1(2H)-Phthalazinone

Modify Date: 2025-08-22 23:12:30

1(2H)-Phthalazinone structure	Common Name	1(2H)-Phthalazinone
	CAS Number	119-39-1	Molecular Weight	146.146
	Density	1.3±0.1 g/cm3	Boiling Point	423.4±18.0 °C at 760 mmHg
	Molecular Formula	C₈H₆N₂O	Melting Point	183-185 °C(lit.)
	MSDS	N/A	Flash Point	209.9±21.2 °C

Name	phthalazin-1(2H)-one
Synonym	More Synonyms

Density	1.3±0.1 g/cm3
Boiling Point	423.4±18.0 °C at 760 mmHg
Melting Point	183-185 °C(lit.)
Molecular Formula	C₈H₆N₂O
Molecular Weight	146.146
Flash Point	209.9±21.2 °C
Exact Mass	146.048019
PSA	45.75000
LogP	0.82
Vapour Pressure	0.0±1.0 mmHg at 25°C
Index of Refraction	1.705

1(2H)-Phthalazinone MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TH9185000

CHEMICAL NAME :: 1(2H)Phthalazinone

CAS REGISTRY NUMBER :: 119-39-1

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C8-H6-N2-O

MOLECULAR WEIGHT :: 146.16

WISWESSER LINE NOTATION :: T66 BVMNJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 370 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: IHFCAY Industrial Hygiene Foundation of America, Chemical and Toxicological Series, Bulletin. (Pittsburgh, PA) 1947-69. Volume(issue)/page/year: 6,1,1967

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 180 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#00139

Hazard Codes	Xn:Harmful;
Risk Phrases	R22;R36/37/38;R68
Safety Phrases	S22-S24/25-S36/37/39-S26
WGK Germany	3
RTECS	TH9185000
HS Code	29339990

Precursor 9
CAS#:119-67-5 2-Carboxybenzal... CAS#:62551-42-2 2-(dibromomethy... CAS#:253-52-1 Phthalazine CAS#:55294-87-6 2-(3-oxo-1H-2-b...
CAS#:328-50-7 2-Ketoglutaric acid CAS#:304-20-1 Hydralazine hyd... CAS#:67-64-1 Acetone CAS#:480-91-1 Isoindolin-1-one
CAS#:3260-44-4 4-OXO-3,4-DIHYD...
DownStream 10
CAS#:108664-36-4 2-[3-(4-chlorop... CAS#:496-12-8 Isoindoline CAS#:19064-69-8 1-Aminophthalazine CAS#:24953-56-8 1-Methoxyphthalazine
CAS#:5784-45-2 1-CHLOROPHTHALAZINE CAS#:100537-30-2 1-Phenoxyphthalazine CAS#:155289-19-3 2-(4-bromobutyl... CAS#:5004-45-5 4-Phenyl-2-hydr...
CAS#:16015-46-6 1(2H)-Phthalazi... CAS#:126300-23-0 2-(2-bromoethyl...

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%

phthalazinol

1(2H)-phthalazinone

2,3-Phthalazinone

1,2H-PHTHALAZONE

phthalazin-1(2H)-one

1-phthalazinone

MFCD00006892

1,2-Dihydro-1-oxophthalazine

PTLZ

1-oxophthalazine

phthalazin-1-one

Benzo[d]pyridazin-1(2H)one

EINECS 204-319-8

phthalazinone

Pthalazone

2H-phthalazin-1-one

PHTHALAZONE

Phthalazin-1-ol

1-phthalazinol

Phtalazin-1-ol

1(2H)-Phthalazinone

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 1(2H)-Phthalazinone
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 1(2H)-Phthalazinone
Price: ￥648.0/100g ￥2058.0/500g ￥248.0/25g
Purity: 98.0%
Delivery: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 1(2H)-Phthalazinone
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: 119-39-1
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

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1(2H)-Phthalazinone

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CHEMICAL IDENTIFICATION

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The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.