Acetic Acid (Glacial/Concentrated)

Acidification solvent · process auxiliary for in-house diluent prep

Confirm ordered grade and released-lot assay on the COA · target, verify batch COACAS 64-19-7RUO

Research statusEstablished laboratory chemical; not a peptide or finished diluent

Supplied formConcentrated small-molecule carboxylic acid

Lead time7–14 days

Acetic Acid (Glacial/Concentrated) — Clear, colorless liquid; may crystallize below approximately 16.6 °C

Acetic Acid (Glacial/Concentrated) — Clear, colorless liquid; may crystallize below approximately 16.6 °C · Representative packaging image · verify the ordered lot

Representative packaging image · verify the ordered lot

Decision summary

Key benefits

Defined small-molecule identity with authoritative PubChem reference properties.
Useful as a process auxiliary when concentration and downstream controls are explicitly defined.
Clear separation between concentrated solvent and a finished aqueous diluent reduces procurement error.

Published research context is presented for literature orientation only. It is not a dosing, treatment or human-use instruction.

Qualification data

Specifications to confirm against the released lot

CAS: 64-19-7
Formula: C₂H₄O₂
Molecular weight: 60.05 g/mol
Appearance: Clear, colorless liquid; may crystallize below approximately 16.6 °C
Purity: Confirm ordered grade and released-lot assay on the COA · target, verify batch COA
Storage: Store in a compatible, tightly closed container in a cool, ventilated chemical-storage area, segregated from incompatible oxidizers and bases. Follow the released-lot SDS and local chemical-safety requirements.
MOQ: On request
Lead time: 7–14 days

PubChem CID 176

Qualification matrix

Identity, purity and content are separate release questions.

Identity

Confirm the stated molecule and supplied form. Start with the matching batch COA; request sequence-level evidence only when the buyer's written procedure requires it and availability or a separate scope has been agreed.

Purity

Review RP-HPLC method conditions, wavelength, integration and related-peak handling. A percentage without the method is not enough.

Content

Net peptide content is not the same as gross lyophilized powder weight. Ask which assay supports the stated amount and whether water/counter-ion is addressed.

Stability

Define long-term storage and transit exposure separately. Cold-chain can be quoted when the buyer’s risk assessment requires it and adds cost.

Research context

What researchers study about Acetic Acid (Glacial/Concentrated)

Glacial acetic acid is concentrated acetic acid, a defined small molecule with formula C₂H₄O₂, molecular weight 60.05 g/mol and PubChem CID 176. The term ‘glacial’ describes the concentrated material and its crystallization near room temperature; it does not describe a sterile, ready-to-use aqueous diluent.

Laboratory pH adjustment and solvent/process studies
Preparation of protocol-defined acidic solutions under validated laboratory controls

Mechanism context

The question the literature is testing

As a process auxiliary, acetic acid changes solution pH and solvent conditions by donating protons in water. The relevant qualification questions are concentration, water content, impurity profile, grade, container compatibility and downstream process controls rather than peptide potency.

Evidence map

Research routes and exposure context

Evidence tierAnalytical / laboratory context

Research areaLaboratory ancillaries

Routes reported in sources

No administration route applies

Dose / exposure contextProtocol-specific; verify the cited primary source

Routes and exposure contexts summarize cited studies or approved finished-product labels. They are not instructions for administering this RUO material; no customer dose is provided.

Evidence boundaries

Compatibility, limitations and decision context

Concentrated acetic acid is corrosive and its vapour is irritating; engineering controls and suitable PPE are required.
The supplied solvent is not a sterile, ready-to-use diluent and is not a finished clinical product.

Interactions reported in the literature

Incompatible with strong oxidizers and strong bases; consult the released-lot SDS for the full incompatibility and materials-compatibility statement.

Literature context is not a supplier release result or human-use instruction. Follow your institution's approved laboratory risk assessment.

Factory batch documentation

Acetic Acid (Glacial/Concentrated) factory batch COAs

No factory batch COA is published for this product yet. Ask sales for the latest available document.

Representative records, refreshed periodically

Published COAs show representative factory batches and may not be the latest available. For a current quote or shipment, our sales team can confirm the applicable lot and provide its COA.

Independent testing, arranged on request

Third-party reports are not routinely published. If independent verification is required, we can agree the laboratory, method, acceptance criteria and remedy before testing. If the agreed specification is not met, an appropriate resolution—including a refund where applicable—can be discussed under the agreed terms. Unless otherwise agreed in writing, the buyer pays the cost of this optional testing.

Help reviewing your COA

Need help reading a factory COA or third-party report? Our sales team can clarify test items, specifications and how the results relate to the lot under discussion.

Ask for the current packet, not a generic certificate

Confirm concentration/assay, water content, appearance and impurity profile for the ordered grade.
Verify container compatibility, SDS revision and transport classification before shipment.

Released-batch COARP-HPLC result and method contextIdentity result appropriate to the moleculeWater / counter-ion context where relevantSDS and handling statementAdditional testing scoped on request

Handling

Storage in the lab and temperature during transit are different decisions

Store in a compatible, tightly closed container in a cool, ventilated chemical-storage area, segregated from incompatible oxidizers and bases. Follow the released-lot SDS and local chemical-safety requirements.

State destination, season, acceptable transit exposure and whether your protocol requires insulated or cold-chain service. Additional temperature-control cost is quoted explicitly.

Buyer FAQ

Terms to settle before the purchase order

Can a buyer arrange third-party testing?+

Yes. Testing must be performed by a mutually accepted, established specialist laboratory. Fee allocation, specification, sampling, method and acceptance rule must be agreed before testing; if an agreed independent result shows nonconformance, the remedy follows the signed order terms. Unless otherwise agreed in writing, the buyer pays the cost of this optional testing.

Does HPLC purity prove peptide content?+

No. Chromatographic purity describes the relative peak profile under a stated method. Identity, water, counter-ion, residual solvents and assay/content may require separate methods.

Is cold-chain shipping always required?+

Not always. Heat can accelerate degradation, especially during summer and long transit. Cold-chain reduces exposure but raises cost. State the destination and stability risk so the right service can be quoted.

How are payment terms handled?+

Available methods and milestones depend on order value, destination and project type. The pro forma invoice should state currency, bank details, fees, payment milestones and the release condition.

Why must the testing laboratory understand peptide chemistry?+

Free-base and salt forms, hydrophilic and hydrophobic sequences, aggregation and adsorption can change sample preparation and method suitability. Use a laboratory experienced with the molecule class.

External qualification references

WHO good storage and distribution practices IATA Temperature Control Regulations ISO/IEC 17025 laboratory competence 21 CFR 211.84 component testing and supplier COA controls

These are buyer-qualification references, not claims that this RUO material is regulated, certified or released under those frameworks. Applicability depends on the buyer's workflow and jurisdiction.

Selected sources

Literature behind the research context

PubChem CID 176 for acetic-acid identity and molecular properties.

01
Acetic Acid — PubChem Compound Summary
PubChem, US National Library of Medicine · 2026 · authoritative chemical database and safety summary
Open source

Product FAQ

Questions buyers ask about Acetic Acid (Glacial/Concentrated)

Is glacial acetic acid the same as vinegar or dilute lab acetic acid?+

No. Reference sources commonly describe glacial acetic acid as approximately 99.5% or higher, whereas vinegar is a much more dilute aqueous food product and laboratory solutions may be supplied at many defined concentrations. ‘Glacial’ refers to concentrated acetic acid and its ice-like crystallization below about 16.6 °C; it does not imply sterility or suitability as a ready-to-use diluent. Confirm the ordered grade, assay and water content on the released-lot COA.

How is glacial acetic acid characterized as a process auxiliary?+

Qualify it as a small-molecule solvent rather than as a peptide. Review chemical identity, quantitative assay, water content, impurity profile, ordered grade, container compatibility and the actual test methods and acceptance criteria. Depending on the specification, titration, GC and a validated water method may be relevant; a peptide-style HPLC area percentage and mass spectrum are not a complete solvent qualification package.

What handling and downstream-sterility considerations apply?+

Glacial acetic acid is corrosive and its vapour is irritating. Use the engineering controls, compatible gloves, eye/face protection, storage segregation and spill response specified by the released-lot SDS and institutional risk assessment. This listing provides no sterile-product preparation instruction: any downstream process requiring sterility must use a separately validated, institution-approved process and starting-material specification.