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99-11-6

99-11-6 structure
99-11-6 structure
  • Name: Citrazinic acid
  • Chemical Name: Citrazinic acid
  • CAS Number: 99-11-6
  • Molecular Formula: C6H5NO4
  • Molecular Weight: 155.11
  • Catalog: Chemical reagent Organic reagent Ester Methyl ester compound
  • Create Date: 2018-06-20 16:06:28
  • Modify Date: 2025-08-20 17:49:07
  • Citrazinic acid is a weakly fluorescent compound whose optical properties are dependent on aggregation states and chemical environment. Citrazinic acid strongly tends to form dimers at high concentrations[1].
Name Citrazinic acid
Synonyms 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid
4-Pyridinecarboxylic acid, 1,2-dihydro-6-hydroxy-2-oxo-
EINECS 202-731-2
6-Hydroxy-4-carboxy-2-pyridone
MFCD00006274
2,6-Dihydroxy-isonicotinic acid
1,2-Dihydro-6-hydroxy-2-oxo-4-pyridinecarboxylic Acid
6-hydroxy-2-oxo-1,2-dihydropyridine-4-carboxylic acid
Citrazinic acid
6-Hydroxy-2-oxo-1,2-dihydro-4-pyridinecarboxylic acid
Description Citrazinic acid is a weakly fluorescent compound whose optical properties are dependent on aggregation states and chemical environment. Citrazinic acid strongly tends to form dimers at high concentrations[1].
Related Catalog
References

[1]. Stagi L, et al. Anomalous Optical Properties of Citrazinic Acid under Extreme pH Conditions. ACS Omega. 2020 May 5;5(19):10958-10964.  

Density 1.7±0.1 g/cm3
Boiling Point 630.3±55.0 °C at 760 mmHg
Melting Point >300 °C(lit.)
Molecular Formula C6H5NO4
Molecular Weight 155.11
Flash Point 335.0±31.5 °C
Exact Mass 155.021851
PSA 90.65000
LogP -1.50
Vapour Pressure 0.0±1.9 mmHg at 25°C
Index of Refraction 1.686
Water Solubility practically insoluble

CHEMICAL IDENTIFICATION

RTECS NUMBER :
NS1400000
CHEMICAL NAME :
Isonicotinic acid, 2,6-dihydroxy-
CAS REGISTRY NUMBER :
99-11-6
LAST UPDATED :
199710
DATA ITEMS CITED :
7
MOLECULAR FORMULA :
C6-H5-N-O4
MOLECULAR WEIGHT :
155.12
WISWESSER LINE NOTATION :
T6NJ BQ DVQ FQ

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 :
>3200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
>20 mL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - T1498 No. of Facilities: 43 (estimated) No. of Industries: 2 No. of Occupations: 3 No. of Employees: 255 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - T1498 No. of Facilities: 6 (estimated) No. of Industries: 2 No. of Occupations: 1 No. of Employees: 34 (estimated) No. of Female Employees: 3 (estimated)
Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi:Irritant;
Risk Phrases R36/37/38
Safety Phrases S26-S36-S36/37/39-S22
RIDADR NONH for all modes of transport
WGK Germany 1
RTECS NS1400000
HS Code 29333999
55-22-1 structure

55-22-1

~%

22282-72-0 structure

22282-72-0

99-11-6 structure

99-11-6

Literature: EP1801102 A1, ; Page/Page column 9-10 ;
597-59-1 structure

597-59-1

~%

99-11-6 structure

99-11-6

Literature: Chemische Berichte, , vol. 17, p. 2688
725679-43-6 structure

725679-43-6

~%

99-11-6 structure

99-11-6

Literature: Chemische Berichte, , vol. 17, p. 2688
130839-31-5 structure

130839-31-5

~%

99-11-6 structure

99-11-6

Literature: Chemische Berichte, , vol. 17, p. 2688
5398-44-7 structure

5398-44-7

~%

99-11-6 structure

99-11-6

Literature: Journal of the Chemical Society, , vol. 71, p. 1082 Journal of the Chemical Society, , vol. 73, p. 441
1587-20-8 structure

1587-20-8

~%

99-11-6 structure

99-11-6

Literature: Journal of the Chemical Society, , vol. 61, p. 1009 Chemische Berichte, , vol. 17, p. 2688
77-92-9 structure

77-92-9

~%

99-11-6 structure

99-11-6

Literature: Journal of the American Pharmaceutical Association (1912-1977), , vol. 45, p. 478
57-13-6 structure

57-13-6

77-92-9 structure

77-92-9

~%

99-11-6 structure

99-11-6

Literature: DE1011885 , ;
HS Code 2933399090
Summary 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%
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