Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Paraxylic Acid
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Purity: 99.0%
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Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Paraxylic Acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3,4-Dimethylbenzoic acid
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Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: Paraxylic Acid
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619-04-5

619-04-5 structure

619-04-5 structure

Name: Paraxylic Acid
Chemical Name: 3,4-dimethylbenzoic acid
CAS Number: 619-04-5
Molecular Formula: C₉H₁₀O₂
Molecular Weight: 150.174
Catalog: Biochemical Amino acids and their derivatives Serine derivative
Create Date: 2018-04-26 08:00:00
Modify Date: 2025-08-21 12:44:52
3,4-Dimethylbenzoic acid acts as a product of dimethylbenzoate metabolism by Rhodococcus rhodochrous N75[1].

Name	3,4-dimethylbenzoic acid
Synonyms	asym.-o-Xylylic acid Paraxylic Acid EINECS 210-576-7 3,4-diMeC6H4COOH 3,4-Dimethylbenzoic acid 3,4-Dimethyl-benzoesaeure o-Xylene-4-carboxylic Acid Benzoic acid,3,4-dimethyl Benzoic acid, 3,4-dimethyl- MFCD00002524 3,4-dimethylbenzene carboxylic acid 1-Carboxy-3,4-dimethylbenzene 3,4-DiMethyl-Benzoic Acid

Description	3,4-Dimethylbenzoic acid acts as a product of dimethylbenzoate metabolism by Rhodococcus rhodochrous N75[1].
Related Catalog	Research Areas >> Others Signaling Pathways >> Others >> Others
In Vitro	3,4-Dimethylbenzoic acid is oxidised by 4-methylbenzoate (p-toluate)-grown cells of Rhodococcus rhodochrous N75 via the ortho-pathway through the intermediates 3,4-dimethylcatechol[1].
References	[1]. StefanSchmidt, et al. Isolation and identification of two novel butenolides as products of dimethylbenzoate metabolism by Rhodococcus rhodochrous N75.

Density	1.1±0.1 g/cm3
Boiling Point	294.6±9.0 °C at 760 mmHg
Melting Point	163-165 °C(lit.)
Molecular Formula	C₉H₁₀O₂
Molecular Weight	150.174
Flash Point	134.9±13.4 °C
Exact Mass	150.068085
PSA	37.30000
LogP	2.82
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.550

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DG8734020

CHEMICAL NAME :: Benzoic acid, 3,4-dimethyl-

CAS REGISTRY NUMBER :: 619-04-5

BEILSTEIN REFERENCE NO. :: 0907267

LAST UPDATED :: 199701

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C9-H10-O2

MOLECULAR WEIGHT :: 150.19

WISWESSER LINE NOTATION :: QVR C1 D1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 316 mg/kg

TOXIC EFFECTS :: Behavioral - rigidity (including catalepsy) Behavioral - muscle contraction or spasticity

REFERENCE :: JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc., Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC 20037) V.6- 1963- Volume(issue)/page/year: 11,1020,1968

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xn:Harmful;
Risk Phrases	R22;R36/37/38
Safety Phrases	S22-S24/25-S37/39-S26
RIDADR	NONH for all modes of transport
WGK Germany	3
RTECS	DG8734020
HS Code	2916399090

Precursor 9
3637-01-2 95-47-6 124-38-9 23182-07-2
513-81-5 471-25-0 95-63-6 88946-56-9
64-18-6
DownStream 10
38404-42-1 5973-71-7 147219-20-3 20896-24-6
19047-21-3 95-47-6 24964-78-1 118-90-1
95-65-8 95-64-7

HS Code	2916399090
Summary	2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

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