orthoboric acid
Enable an AI agent to recognise orthoboric acid, assess the condition and suitability of a particular material, and determine which uses or handling actions its evidence supports.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an AI agent to recognise orthoboric acid, assess the condition and suitability of a particular material, and determine which uses or handling actions its evidence supports.
Orthoboric acid, B(OH)3 or H3BO3, is a boron oxoacid that forms a white crystalline solid and acts in dilute aqueous solution primarily as a weak Lewis acid by accepting hydroxide to form tetrahydroxyborate.
It can be Reconcile a supplier label and analytical evidence with the registered orthoboric-acid identity.; Accept, reject or hold a lot against a named purity and impurity specification.; Assess dissolution or crystallisation conditions using sourced, condition-specific property data.; Flag heated or chemically altered material for identity reassessment.; Determine whether a proposed use is supported by grade, composition and applicable restrictions.; Select handling, storage and disposal actions from verified substance and lot documentation..
Distinguishing features
Identity evidence must support H3BO3, commonly represented as B(OH)3; a total-boron result alone cannot distinguish orthoboric acid from other boron compounds.
Orthoboric acid must be distinguished from borax and other borate salts through composition and counterion evidence, rather than accepting any material labelled 'borate'.
A heated material must be checked for dehydration products before it retains an unqualified orthoboric-acid identity.
An aqueous sample requires pH, concentration and speciation context: dissolved boron must not automatically be recorded as exclusively molecular orthoboric acid.
A product containing orthoboric acid is distinguished from the substance itself by its other ingredients, declared acid content and intended product function.
Scope
+ Orthoboric acid identity, H3BO3 composition and distinction from other boron compounds
+ Lot-specific purity, impurities, moisture, physical form and declared grade
+ Solid and dissolved states under recorded temperature, concentration and solution conditions
+ Measured properties and evidence of dehydration or other chemical transformation
+ Substance-specific hazards, exposure assessment and jurisdiction-dependent regulatory identity
- Borax, other borate salts, metaboric acid and boron oxide as independently identified substances
- Finished pesticides, medicines, cosmetics and other formulated products containing orthoboric acid
- Industrial manufacturing plants and detailed production-process models
- Clinical diagnosis, treatment decisions and patient-specific dosing
- Complete models of environmental transport, ecosystems or waste-treatment facilities
Characteristics
- Verified substance identity
- H3BO3 / B(OH)3; verified CAS, PubChem and EC identifiers with source Prevents confusion between orthoboric acid, other boric acids, borate salts and mixtures.
- Orthoboric acid assay
- % by mass; analytical method; as-received or dry basis Establishes how much of a lot is the intended substance and whether a grade requirement is met.
- Boron reporting basis
- Elemental B, H3BO3 equivalent or B2O3 equivalent Prevents comparing unlike assay values or treating an equivalent-content calculation as proof of chemical identity.
- Water and volatile content
- % by mass with method and test temperature Distinguishes moisture evidence from mass loss caused by dehydration of the acid itself.
- Impurity profile
- mg/kg or % by mass for named impurities, with detection limits Supports suitability decisions where salts, metals or insoluble matter limit use.
- Grade and specification
- Named technical, reagent or other grade linked to a specification and lot certificate A grade label only supports a use when its actual requirements and verification are known.
- Physical form
- Crystals, powder or dissolved material; particle size in µm where applicable Affects dust generation, dissolution and sampling representativeness.
- Solution condition
- Concentration in mol/L or g/L; pH; temperature in °C; solvent and relevant additives Controls interpretation of solubility, acidity and dissolved boron species.
- Thermal behaviour
- Transition or mass-loss temperature in °C, with pressure, method and observed products Prevents reporting dehydration or decomposition as an ordinary melting or boiling point.
- Hazard and exposure record
- Applicable classification, safety data sheet and exposure limits with jurisdiction, date and measurement basis Connects handling decisions to the correct substance, material form and governing requirements.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 19 findings · 29 questions.
Orthoboric acid identity Establishes what qualifies as orthoboric acid and where neighbouring boron substances begin.
Names and boron-content declarations alone cannot establish this substance's identity.
Formula and identifiers
Connects the registered thing to verified chemical identity records.
Identity evidence
Record evidence that the material is H3BO3 and reconcile its names and external identifiers.
- Which authoritative records establish the CAS number, PubChem CID and EC number for orthoboric acid? provenance
- What identity test supports H3BO3 rather than merely detecting boron? measurement
Boron substance boundaries
Separates the acid from salts, dehydration products and formulated products.
Neighbouring materials
Require explicit composition evidence when labels such as 'boric acid' or 'borate' leave identity ambiguous.
- Does counterion or phase evidence indicate a borate salt or another boron compound instead of orthoboric acid? boundary
- Is the object being assessed the acid itself, a solution of it or a finished product containing it? boundary
Assay and grade Determines the composition and specification status of an actual orthoboric-acid lot.
Suitability depends on measured composition and grade rather than the substance name alone.
Assay interpretation
Makes purity and boron-content measurements comparable without confusing their reporting bases.
Content basis
Preserve the analyte, method and mass basis behind every reported assay.
- Is the reported content expressed as H3BO3, elemental boron or B2O3 equivalent, and on what moisture basis? measurement
- Can the assay distinguish orthoboric acid from other boron-containing species present in the sample? boundary
Impurities and specification
Links lot evidence to the requirements of a declared grade and proposed use.
Lot fitness
Assess named impurities, moisture and insoluble matter against an identified specification.
- Which limits for impurities, water and insoluble matter does the declared grade impose, and which certificate verifies this lot? provenance
- Do the measured results and detection limits support acceptance for the proposed use? action
Solid state and heating Tracks physical form and the boundary between warming the acid and chemically transforming it.
Particle form affects handling, while heating can change the material's chemical identity.
Crystals and powder
Records the physical properties needed to assess solid orthoboric acid.
Solid condition
Characterise particle form, moisture and caking without treating appearance as an identity test.
- What crystal or powder form, particle-size distribution and caking condition does the lot exhibit? measurement
- Which sourced density or other solid-property measurements apply to this form and temperature? provenance
Thermal transformation
Interprets thermal events alongside mass loss and product identification.
Dehydration boundary
Record heating history and evidence of dehydration before assigning transition constants or retaining the original identity.
- Does a reported melting or boiling value describe a phase transition, dehydration or decomposition under the stated test conditions? boundary
- What thermal exposure and analytical evidence require the material to be reassessed for metaboric acid or other dehydration products? action
Aqueous behaviour Models dissolution, crystallisation and the interpretation of boron species in solution.
An orthoboric-acid solution cannot be adequately described by nominal acid content alone.
Dissolution and saturation
Relates dissolved concentration to solvent composition and temperature.
Solution feasibility
Use condition-specific solubility evidence to assess dissolution and possible crystallisation.
- What measured solubility applies at the intended temperature and solvent composition, and how is its concentration basis defined? measurement
- Will the intended cooling, evaporation or dilution step leave the solution within its supported solubility range? action
Acidity and speciation
Separates total dissolved boron from orthoboric acid, borate and relevant complexes.
Dissolved species
Interpret solution measurements using applicable acid-base equilibria and any relevant complexation.
- Which equilibrium model and sourced constants describe orthoboric acid and borate at the measured pH, temperature and concentration? definition
- Do polyols or other additives alter speciation or the interpretation of the analytical method? boundary
Hazards and permitted handling Connects verified orthoboric-acid hazards and applicable restrictions to decisions about the material.
Handling and use decisions require current evidence tied to jurisdiction, concentration and exposure conditions.
Classification and exposure
Records authoritative hazard classifications and interpretable exposure criteria.
Applicable hazard evidence
Resolve classification and exposure requirements for the actual substance or mixture being handled.
- What current GHS implementation and reproductive-toxicity classification, if applicable, govern this material in the relevant jurisdiction? provenance
- Which occupational exposure limits apply, and are their values expressed as boric acid, elemental boron or a specified particulate fraction? measurement
Use, storage and disposition
Translates verified safety and regulatory documentation into supported material actions.
Supported material actions
Evaluate the proposed use and handling route against grade, material condition and applicable documentation.
- Do the material's grade, concentration and jurisdiction-specific restrictions support its proposed use? action
- Which storage, dust-control, spill-response and disposal instructions apply to this lot and its contaminants? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This is recalled knowledge, not source-verified research.
- Verify current jurisdiction-specific hazard classifications, concentration thresholds, exposure limits and permitted uses.
- Check purity specifications and temperature-dependent solubility and dehydration data before selecting material for a particular application.
- Which of these check these first hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Technical grade
- Reagent grade
- Pharmacopoeial grade
- Which of these kinds and varieties hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- CAS Registry Number - 10043-35-3 - Commonly used identifier for boric acid.
- PubChem CID - 7628 - Boric acid.
- EC number - 233-139-2 - European substance identifier for boric acid.
- Chemical formula - H3BO3 - B(OH)3 expresses the molecular hydroxyl-group structure.
- Which of these identifiers and schemes hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- European Union REACH Regulation governs chemical registration and restrictions relevant to boric acid.
- European Union CLP Regulation governs substance classification, labelling and packaging.
- United States Pharmacopeia-National Formulary, issued by USP, includes a Boric Acid monograph for compendial quality.
- Which of these standards and regulation hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Boron source in glass, ceramic and glaze manufacture.
- Neutron absorber in the coolant of pressurized-water nuclear reactors.
- Component of borate buffer systems and some electroplating baths.
- Ingredient in insecticidal formulations.
- Component of some flame-retardant and wood-preservative formulations.
- Which of these real-world use hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Molar mass - 61.83 - g/mol
- Aqueous acid dissociation pKa - Approximately 9.24 at 25 °C in dilute solution - dimensionless
- Crystalline solid density - Approximately 1.44 near room temperature - g/cm³
- Which of these typical measurements hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Sufficient ingestion or repeated exposure can cause systemic toxicity.
- Reproductive and developmental toxicity is a significant hazard concern.
- Dust can irritate the eyes and respiratory tract.
- Heating causes dehydration to other boron-oxygen compounds; a simple boiling point does not adequately describe its thermal behavior.
- Grade impurities can make material unsuitable for pharmaceutical, analytical or nuclear applications.
- Which of these failure modes and hazards hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Permitted pesticide, preservative and medicinal uses depend on jurisdiction and product authorization.
- Pharmacopoeial grade requires conformity to the applicable compendium; a grade designation alone does not establish suitability for every use.
- Which of these regional variation hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Boric acid - Usually denotes this same substance; orthoboric acid specifies H3BO3 and should not ordinarily be modeled as a separate substance from it.
- Metaboric acid - Has the empirical formula HBO2 and results from dehydration of orthoboric acid.
- Borax - A sodium borate salt, commonly encountered as the decahydrate, rather than the neutral acid B(OH)3.
- Boron trioxide - B2O3 is the boron oxide obtained after further dehydration; it contains no hydrogen.
- Boric acid formulation - A mixture containing orthoboric acid, with concentration and additional ingredients that determine product properties.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of orthoboric acid this model covers, and on what evidence? provenance
What the second pass must settle
- Which authoritative identity records should anchor the CAS, PubChem and EC identifiers, and does an existing Vercy world model already own this concept?
- Which thermal-property reports reliably distinguish phase transitions from dehydration, and is an ordinary boiling-point field meaningful for this substance?
- Which solubility and acid-base datasets cover the temperatures, concentrations and additives relevant to the intended uses?
- Which grade specifications and analytical methods distinguish orthoboric-acid purity from total boron and thermal mass loss?
- Which current classifications, exposure limits and use restrictions apply in the jurisdictions this model must support?