Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 1(2H)-Phthalazinone
Price: Check
Purity: 98.0%
Stocking Period: 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%
Stocking Period: 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%
Stocking Period: 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%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

119-39-1

119-39-1 structure

119-39-1 structure

Name: 1(2H)-Phthalazinone
Chemical Name: phthalazin-1(2H)-one
CAS Number: 119-39-1
Molecular Formula: C₈H₆N₂O
Molecular Weight: 146.146
Catalog: Chemical reagent Organic reagent Aromatic ketone
Create Date: 2018-06-05 08:00:00
Modify Date: 2025-08-22 23:12:30

Name	phthalazin-1(2H)-one
Synonyms	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

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

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
119-67-5 62551-42-2 253-52-1 55294-87-6
328-50-7 304-20-1 67-64-1 480-91-1
3260-44-4
DownStream 10
108664-36-4 496-12-8 19064-69-8 24953-56-8
5784-45-2 100537-30-2 155289-19-3 5004-45-5
16015-46-6 126300-23-0

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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