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Identify Suppliers 2025 Properties Safty

Phthalic aldehyde

BGC Id:	600828338615
CAS No:	643-79-8
Synonyms:	cidex-opa ; opa ; phthalaldehyde ; o-phthaldehyde ; opd ; phthaldehyde ; phtalaldehydes ; phtharal ; o-phthaladehyde ; 2-phthaldehyde
Molecular Formula:	C8H6O2
Molecular Weight:	134.13
EINECS:	211-402-2

Verified providers in 2025

The following 2 notable providers have been checked and can be recommended.

Sancai Industry

Appearance	White powder
Purity	≥ 99%
Moisture	≤ 0.04%
Heavy metals	≤ 0.002%
Standard

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Dayang Chem

What other providers are available for CAS 643-79-8?

The last intensive check and update was carried out on 2025/04/22.

Identify

Synonyms:

cidex-opa ; opa ; phthalaldehyde ; o-phthaldehyde ; opd ; phthaldehyde ; phtalaldehydes ; phtharal ; o-phthaladehyde ; 2-phthaldehyde

CAS:

643-79-8

EINECS:

211-402-2

Molecular Formula:

C8H6O2

MDL:

MFCD00003335

Properties

Molecular Weight:

134.13 g·mol−1

Density:

1.13

Melting point:

55-58 °C(lit.)

Boiling point:

83-84 °C (0.7501 mmHg)

Flash point:

>230 ºF

Suppliers

Sancai Industry Co.,Ltd.

Company type: Leading producer

Sancai Industry is involved in supplying of fine chemicals, food and nutrition,personal care, medical intermediate etc, We can also customize chemicals for our customers.Taking advantage of innovative technology and excellent talents and through over 15 years of development,We have stabled good relation with clients in and abroad. In order to be competitive on the market. We have established the global marketing network, independent research center, testing center, and key ...

Country: P.R.China Phone: +86-531-88913079 Telefax: +86-531-88913079

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Dayang Chem (Hangzhou) Co.,Ltd.

Company type: Leading producer

Country: P.R.China
Phone: +86-571-88938639
Telefax: +86-571-8893-8652

Hangzhou DayangChem Co. Ltd is a comprehensive entity which specializes in development, production and trade of pharmaceutical, agrochemical and dyestuff intermediates as well as some special type reagents. We have an own factory and share enterprises. We act also as agent of many chemical factories and promote their products to the international market at very competitive price. We take "Credi first, Clients supreme" as our aim. Dayang Chem (Hangzhou) Co.,Ltd. also offers cis-2-Amino-1-cyclopentanecarboxylic acid hydrochloride hemihydrate. We expect to cooperate with more partners in ...

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Safety Information

Hazard Symbols: Xi, T, N, C

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

36/37/38-43-34-25-50-52/53 (R)

Safety Codes:

26-28-36-45-36/37/39-61-37/39 (S)

WGK Germany:

RID / ADR:

UN2923 8 / PG 2

RTECS:

TH6950000

Storage temperature:

2-8°C

What other providers are available for CAS 643-79-8?

In addition to the providers presented here for Phthalic aldehyde with the CAS number 643-79-8, there are other 120 providers with slightly different product names available for this CAS number.

OPA

BuGuCh & Partners

2-Phthalaldehyde

Carbone Scientific Co., Ltd. +6 additional providers that we know from the past

o-Phthalaldehyde

Phthaldialdehyde

+2 additional providers that we know from the past

o-Phthaldialdehyde

Capot Chemical Co., Ltd. +8 additional providers that we know from the past

o-Phthalaldehyde, Reag.

+2 additional providers that we know from the past

o-Phthalic dicarboxaldehyde

BIOZOL Diagnostica Vertrieb GmbH | BuGuCh & Partners +6 additional providers that we know from the past

Benzene-1,2-dicarboxaldehyde

BLD Pharmatech Ltd | BuGuCh & Partners +8 additional providers that we know from the past

1,2-Phthalic dicarboxaldehyde

Hangzhou Meite Industry Co., Ltd (Hangzhou Meite Chemical Co., Ltd) | Nantong Xindao Biotech Ltd +1 additional providers that we know from the past