Description

4,6-Diaminoresorcinol Dihydrochloride (CAS No. 16523-31-2) is a high-purity organic compound with the molecular formula C₆H₁₀Cl₂N₂O₂. This dihydrochloride salt derivative of 4,6-diaminoresorcinol is widely utilized in research and industrial applications due to its role as a key intermediate in polymer synthesis, particularly for high-performance materials such as polybenzoxazoles (PBO) and other thermally stable polymers. Its unique aromatic diamine structure with hydroxyl functionalities makes it valuable for advanced material science, including flame-resistant fibers and coatings. The product is supplied as a fine crystalline powder with ≥97% purity, ensuring consistency for sensitive applications. Proper storage in a cool, dry environment is recommended to maintain stability.

Properties

• CAS Number: 16523-31-2
• Complexity: 108
• IUPAC Name: 4,6-diaminobenzene-1,3-diol;dihydrochloride
• InChI: InChI=1S/C6H8N2O2.2ClH/c7-3-1-4(8)6(10)2-5(3)9;;/h1-2,9-10H,7-8H2;2*1H
• InChI Key: KUMOYHHELWKOCB-UHFFFAOYSA-N
• Exact Mass: 212.0119330
• Molecular Formula: C6H10Cl2N2O2
• Molecular Weight: 213.06
• SMILES: C1=C(C(=CC(=C1N)O)O)N.Cl.Cl
• Topological: 92.5
• Monoisotopic Mass: 212.0119330
• Physical Description: Grey or purple solid;
• Synonyms: 16523-31-2, 4,6-Diaminoresorcinol dihydrochloride, 1,3-Benzenediol, 4,6-diamino-, hydrochloride (1:2), 1,3-Benzenediol, 4,6-diamino-, dihydrochloride, DTXSID30884916, DTXCID101024335, 1,3Benzenediol, 4,6diamino, dihydrochloride, 1,3Benzenediol, 4,6diamino, hydrochloride (1:2), 605-395-9, 4,6-diaminobenzene-1,3-diol Dihydrochloride, 4,6-Diaminoresorcinol DiHCl, 4,6-diaminobenzene-1,3-diol;dihydrochloride, 4,6-Diaminoresorcinol 2HCl, MFCD00143239, 4,6-diamino resorcinol dihydrochloride, SCHEMBL41565, diaminoresorcinol dihydrochloride, diamino resorcinol dihydrochloride, 4,6-diaminoresorcin dihydrochloride, BCP18793, 4,6-diamino-resorcinol dihydrochloride, AKOS015844821, AC-8155, CS-W014984, DS-8677, FD00382, SB78723, DB-027102, 4,6-Diamino-1,3-benzenediol dihydrochloride, 4,6-Diaminoresorcinol dihydrochloride, 97%, D1888, ST50405907, I10050, 4,6-bis(azanyl)benzene-1,3-diol dihydrochloride, EN300-7410198, 4,6-diaminobenzene-1,3-diol, chloride, chloride, A810630, 4,6-Dihydroxy-1,3-phenylenediamine Dihydrochloride

4,6-Diaminoresorcinol Dihydrochloride serves as a critical monomer in the synthesis of polybenzoxazole (PBO) polymers, renowned for their exceptional thermal and mechanical properties. It is employed in the development of high-temperature-resistant fibers for aerospace and military applications. Researchers also utilize it in organic synthesis for constructing heterocyclic compounds and pharmaceutical intermediates. Its dihydrochloride form enhances solubility in aqueous systems, facilitating controlled reactions.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (50%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H341 (50%): Suspected of causing genetic defects [Warning Germ cell mutagenicity]

Precautionary Statements

• P203, P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P318, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (50%)
• Muta. 2 (50%)

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