Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

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

21905-89-5

21905-89-5 structure

21905-89-5 structure

Name: 1-Naphthalenecarboxylicacid, 3,4-dihydro-3,4-dioxo-
Chemical Name: 3,4-dioxonaphthalene-1-carboxylic acid
CAS Number: 21905-89-5
Molecular Formula: C₁₁H₆O₄
Molecular Weight: 202.16300
Create Date: 2017-09-14 10:56:40
Modify Date: 2025-10-27 17:07:01

Names
Properties

Name	3,4-dioxonaphthalene-1-carboxylic acid
Synonyms	1-Naphthalenecarboxylicacid,3,4-dihydro-3,4-dioxo 3,4-Dioxo-3,4-dihydro-[1]naphthoesaeure 3,4-dioxo-3,4-dihydro-[1]naphthoic acid 4-Carboxy-1,2-naphthochinon 3.4-Dioxo-3.4-dihydro-naphthalin-carbonsaeure-(1) Naphthochinon-(1.2)-carbonsaeure-(4)

Density	1.522g/cm3
Boiling Point	356.5ºC at 760mmHg
Molecular Formula	C₁₁H₆O₄
Molecular Weight	202.16300
Flash Point	183.6ºC
Exact Mass	202.02700
PSA	71.44000
LogP	0.92000
Vapour Pressure	1.06E-05mmHg at 25°C
Index of Refraction	1.659

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