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Specification

Concerning Product:
Article number 54853NPEUI
Trade name / designation / denomination Isoniazid, EP/USP/IP
CAS number 54-85-3
Other names / synonyms•4-pyridinecarbohydrazide; •Hidranizil / Isoniazid / Isonicotinic acid hydrazide; •Isonicotinohydrazide; •Pyridin-4-carbonsäurehydrazid; •isoniazid;
EC number200-214-6
Customs tariff number / CN code / TARIC29333999
Molecular weight [g / mol]137,14
FormulaC6H7N3O
Warning
Harmful if swallowed.
Do not get in eyes, on skin, or on clothing.


Parameter Test Method Specification Unit

Organoleptic test
Appearance of solution EP/BP, IP A 5 % w/v solution is clear and not more itensely colored than refeence Solution BY7.
Colour EP/BP, USP, IP colorless, white or almost white
Odour USP odourless

Physical parameter
Form EP/BP, USP, IP crystalline powder or crystals
Loss on drying IP ≤ 1,0 %
Loss on drying EP/BP, IP ≤ 0,50 %
pH value USP (10% w/v): 6,0  –  7,5
pH value EP/BP, IP (5 % w/v): 6,0  –  8,0
Solubility USP, IP in Chloroform: slightly soluble
Solubility EP/BP, USP, IP in ethanol (96%): sparingly soluble
Solubility USP, IP in Ether: very slightly soluble
Solubility EP/BP, USP, IP in water: easily soluble

Identity
Assay IP (HPLC) 98,0  –  101,0 %
Assay USP (HPLC) 98,0  –  102,0 %
Assay EP/BP (Titrimetry) 99,0  –  101,0 %
Identification USP (HPLC) Ident. (D): The retention time of the Isoniazid peak of the sample solution corresponds to that of the standard solution, as obtained in the assay.
Infrared absorbtion spectrometry EP/BP, IP Ident. (B): Should be concordant with IR spectrum of Isoniazid CRS/RS
Melting Point (identity) EP/BP, IP Ident. (A): 170  –  174 °C
Melting Point (identity) EP/BP, IP Ident. (C) of Derivative: 226  –  231 °C

Impurities
Residue on ignition USP ≤ 0,20 %
Heavy Metals (as Pb) USP, IP ≤ 20 ppm
Sulphated ash EP/BP, IP ≤ 0,10 %
Impurity EP/BP (HPLC) (E): ≤ 15 ppm
Impurity IP (HPLC) any individual: ≤ 0,20 %
Impurity EP/BP, USP, In-house (HPLC) any other / unspecified impurities: ≤ 0,10 %
Impurity In-house (HPLC) total impurities: ≤ 0,20 %
Impurity USP (HPLC) total impurities: ≤ 2,0 %
Impurity EP/BP (HPLC) total impurities: ≤ 0,50 %
Impurity IP (HPLC) total impurities: ≤ 1,0 %
Related substances EP/BP (HPLC) (A) Isonicotinic Acid: ≤ 0,15 %
Related substances EP/BP (HPLC) (B) Isonicotinamide: ≤ 0,15 %
Related substances In-house (HPLC) 2-Isoniacid ≤ 0,10 %
Related substances In-house (HPLC) 4-Cyanopyridine %
Related substances IP (TLC) any other single: ≤ 0,05 %
Related substances In-house (HPLC) Benzoyl Hydrazine %
Related substances In-house (HPLC) Diisonicotinol Hydrazide ≤ 0,10 %
Related substances USP (HPLC) Isoniacin: ≤ 0,10 %
Related substances USP, In-house (HPLC) Isonicotinamide: ≤ 0,10 %
Related substances In-house (HPLC) Isonicotinic Acid: ≤ 0,05 %
Related substances USP (HPLC) Isonicotinonitrile: ≤ 0,10 %
Related substances In-house (HPLC) Nicotinoyl Hydracide: ≤ 0,10 %
Related substances USP (HPLC) Picolinohydracin: ≤ 0,10 %

Residual Solvents
Residual solvents In-house (GC) Benzene: ≤ 2 ppm
Residual solvents In-house (GC) Methanol: ≤ 3000 ppm
Residual solvents In-house (GC) Pyridine: ≤ 200 ppm

Elemental Impurities
Chromium (Cr) ≤ 3 ppm
Molybdenum (Mo) ≤ 3 ppm
Nickel (Ni) ≤ 3 ppm
Vanadium (V) ≤ 3 ppm

Microbiological data
Aerobic microorganisms 1000 CFU/g
Aspergillus brasiliensis neg.
Candida albicans neg.
Clostridium sporogenes neg.
Escherichia Coli. neg.
Pseudomonas aeruginosa neg.
Salmonella neg.
Yeast and Mould ≤ 100 CFU/g

Supplemental information:

Shelf life: 5 years


Chemische Werke Hommel GmbH & Co.KG
This document was generated electronically and is valid without signature.
Waltrop, 24. Aug. 2021
We only confirm that we took over the data from our supplier accordingly. Despite careful working, errors in the takeover are not totally excluded. Some or all parts off the document may be translated due to our best knowledge from the original to give a better understanding. If you have any questions about specific details, please call us directly. Unless otherwise marked, these data do not originate from us and have not been tested by us on the correctness. The above information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. We make no warranties, expressed or implied, as to the information's accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of our products for its particular application. The foregoing information does not absolve the buyer of its own tests. Observing existing laws and regulations, is the responsibility of the buyer of our product. Nothing included in this information waives any of our General Terms and Conditions of Sale, which control unless it agrees other in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety precautions, that should be observed when handling or storing our products, are available upon request and are provided in compliance with applicable law. The user should obtain and review the applicable Material Safety Data Sheet information before handling any of these products. For additional information, please contact us.


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