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- 26%- 26%USA Lab High Purity CDA 12-A - 200 Proof Denatured Ethanol With N-Heptane
USA LabCDA12A$25.99 - $1,699.00 -
Description
Technical data
Guide How laboratory mixing works A practical look at mixing fundamentals for cosmetic, fragrance, and extraction formulators working with denatured ethanol. Read article 
Reference Why scaling lab operations isn’t just about buying bigger equipment What changes as you move from bench to pilot to production, and the ops mistakes that quietly kill margin. Read article 
Case study What labs get wrong about pilot-scale equipment The decisions that look smart at bench scale and break at 5–55 gallon volumes, with real examples from the field. Read article
Solvents · Specially Denatured Alcohol · SDA 40-B
Packaged in USA 
TTB-Compliant 
SDS & COA Available 
Hazmat-Trained Fulfillment
The perfumer's alcohol, built for the lab and cleared for cosmetics.
USA Lab Ethanol 200 Proof, SDA 40B (100% ABV) is a USP-grade specially denatured ethyl alcohol formulated under federal formula 40-B. Less than 0.125% combined tert-butyl alcohol and denatonium benzoate. Fast-evaporating, residue-free, water-white. The version most fragrance, personal care, and topical OTC formulators ask for by name.
Packaged in USA TTB-Compliant SDS & COA Available Hazmat-Trained Fulfillment 200proof
100% ABV ethanol base.
<0.125% v/v
Combined denaturants. Minimal impact on formulation.
10Pt-Co
Water-white color, max. Cosmetic-grade clarity.
46.07g/mol
C₂H₅OH · molecular weight.
What you'll use it for
Find the fit for your formulation.
Fragrance & personal care
SDA 40B is the default carrier (and the literal "perfumer's alcohol") for perfumes, colognes, body sprays, and FDA-acceptable hand sanitizer formulations. The denaturants (tert-butyl alcohol and denatonium benzoate) are present at such low concentration that they don't interfere with fragrance top notes, pH, or skin feel. The 200 proof base keeps water out of your blend so fixatives, resinoids, and essential oils dissolve clean.
Dry-down is fast and residue-free. What you smell is your formulation, not the solvent.
Request a quote for production volumesBotanical extraction
For tinctures, washes, and solvent-recovery workflows where the final product is non-ingestible (topicals, aromatherapy bases, research samples), SDA 40B gives you the polarity profile of pure ethanol without the federal excise tax of beverage-grade alcohol. Compatible with rotovap recovery, falling-film evaporators, and standard ethanol centrifuge workflows.
Note: not appropriate for ingestible extracts. Use SDA 3C or food-grade ethanol for those.
Shop extraction equipmentLaboratory & QC
A 200 proof base with a Pt-Co color spec of 10 max means SDA 40B works for glassware rinses, sample preparation, HPLC mobile-phase prep where SDA is acceptable, and instrument cleaning without introducing color or particulate. The lot-specific COA documents acidity ≤0.0025% so you can trace batch performance in your QMS.
Shop lab equipmentContract manufacturing & OTC topicals
If you're filling hand sanitizer, antiseptics, soaps, detergents, or topical OTC products, SDA 40B is the de facto carrier. The FDA's hand sanitizer guidance specifically references SDA 40-B as acceptable. Lot-to-lot consistency matters at scale, and our COA program lets you ship product into regulated channels with traceability your QA team will sign off on.
Shop pharmaceutical supplyChoose the right ethanol
SDA 40B vs. the other formulas you'll see.
"Ethanol" is a category, not a spec. The right denatured (or undenatured) formula depends on what's downstream of your bottle, and which formulas exempt you from federal excise tax. Here's the short version.
| Formula | Denaturant | Best for | Federal excise tax? |
|---|---|---|---|
|
SDA 40B · 200 Proof This product
|
t-butanol + denatonium benzoate (<0.125%) | Perfume, cosmetics, hand sanitizer, topical OTC | No |
| t-butanol + denatonium benzoate (<0.125%) | Water-tolerant cosmetic & extraction work | No | |
| Isopropyl alcohol (5%) | Cleaning, antiseptics, some extractions | No | |
| n-Heptane | Industrial, fuel, non-cosmetic solvent uses | No | |
| None | Ingestibles, food & beverage, pharma actives | Yes |
Specifications.
CAS Number
64-17-5 PubChem ChemSpider UN Number
UN1987 · PG II Formula C₂H₅OH NIST
Mol. Weight 46.07 g/mol
Grade USP / Lab Grade · SDA 40-B
Purity 200 proof (100% ABV)
Denaturants t-BuOH + denatonium benzoate, <0.125% v/v
Specific Gravity 0.7902–0.7912 @ 20/20°C
Acidity (max) 0.0025% as acetic acid
Color (Pt-Co) 10 max · water-white
PubChem CID
702 View Compliance 27 CFR § 21.151
Synonyms Ethanol 200 Proof, Specially Denatured Alcohol, SDA 40B with tert-Butyl Alcohol & Denatonium Benzoate, Denatured Ethanol, Reagent Alcohol, Perfumer’s Alcohol, Methylcarbinol, Grain Alcohol, Ethyl Hydroxide, Ethyl Hydrate, Algrain, Alkohol, Anhydrol, Tecsol
Family-owned since 2010. One Michigan warehouse. Every order packed, labeled, and shipped by the same team that picks up the phone when you call.
USA Lab · Family-owned, supplying the future since 2010
What's actually in the bottle
The anatomy of SDA 40B.
Three molecules. The ethanol does the work; the denaturants are what the federal formula spec calls for. Together they keep the product tax-exempt and undrinkable, with negligible impact on your formulation.
True-scale composition 99.875% ethanol. The denaturants are barely visible.
ETHANOL 99.875% t-BUTANOL <0.1% DENATONIUM <0.025%
Zoomed 800×
Even at 800× magnification, the denaturants together are a sliver. That's why SDA 40B behaves like pure ethanol for nearly every formulation purpose.
First-time hazmat buyer?
How to read the label.
Every chemical bottle has the same set of codes: UN numbers, CAS, hazard class, packing group. Here's what each one means on yours, and why your QA team will ask about them.
1
200 PROOFThe purity gradeProof is double the alcohol-by-volume percentage. 200 proof means 100% ABV: pure ethanol, no water. For applications where water tolerance matters (botanical extraction with hydrophilic compounds, certain cleaning) you may want 190 proof instead.
2
SDA 40BThe denaturing formulaThe federal formula used to denature the ethanol. Defined in 27 CFR § 21.151. SDA 40B specifies t-butyl alcohol plus denatonium benzoate at <0.125% combined v/v. Different SDA formulas use different denaturants. See the comparison table above.
3
UN1987The DOT/IATA shipping identifierA four-digit number assigned by the United Nations to dangerous goods for shipping classification. UN1987 is "Alcohols, n.o.s." (not otherwise specified). "3" is the hazard class (Flammable Liquid). "PG II" is the packing group (medium danger). Your freight carrier needs this to ship legally.
4
64-17-5The CAS Registry NumberThe Chemical Abstracts Service number is the universal identifier for a specific chemical substance. 64-17-5 is ethanol. Your QA team uses this to look up the substance in databases, MSDS systems, and regulatory references; it removes ambiguity that common names can introduce.
5
GHSThe hazard pictogramsThe diamonds with the flame and exclamation point are the Globally Harmonized System pictograms. Flame = flammable. Exclamation point = irritant or other hazard. Required by OSHA on all hazardous chemicals shipped in the US.
6
LOT# / EXP#The traceability codesEvery bottle has a lot number tied to a specific production batch. Match this against the COA we provide (or look it up at usalab.com/coa) to verify the exact specs of what's in your bottle. Required for regulated applications and good practice for any QA-controlled lab.
Before you buy
The questions buyers actually ask.
Do I need a TTB permit to buy SDA 40B denatured ethanol?
For purchases over 5 gallons per calendar year, the federal Alcohol and Tobacco Tax and Trade Bureau (TTB) requires you to hold a User Permit for Specially Denatured Spirits. Below 5 gallons annually, you can purchase without a permit but must still complete the End-Use Certification at checkout. You can apply for a TTB permit at ttb.gov.
How is SDA 40B different from undenatured 200 proof ethanol?
Both are 100% ABV. The difference is the denaturants. Pure 200 proof ethanol is subject to federal excise tax (~$27/gal) because it's drinkable. SDA 40B has trace tert-butyl alcohol and denatonium benzoate added to make it undrinkable, which exempts it from excise tax and drops the per-gallon cost dramatically, while keeping it usable for any non-ingestible application. For perfumes, cosmetics, hand sanitizer, and most lab work, SDA 40B is what you want.
Will the denaturants affect my cosmetic or perfume formulation?
At under 0.125% combined v/v, the denaturants are below the threshold where they meaningfully change skin feel, fragrance profile, or pH. tert-Butyl alcohol has a faint solvent note that disappears with dry-down; denatonium benzoate is the bitterest substance known but is undetectable at this concentration except by taste. For cosmetic, fragrance, and topical OTC use, SDA 40B is treated as functionally equivalent to undenatured ethanol. That's exactly why it's the industry-standard perfumer's alcohol.
What's the lead time and how does SDA 40B ship?
In-stock sizes ship within 1–2 business days from our Livonia, MI warehouse. Ethanol ships as DOT/IATA-regulated hazmat (UN1987, Class 3, PG II). A flat hazmat fee of $30 applies per 1–4 × 1-gal units, or $30 per 5-gal unit at checkout. Drums and totes ship by freight LTL. Contact us for a freight quote if you need a specific transit time or have a production-scale order.
Can I get a Certificate of Analysis and Safety Data Sheet for this product?
Yes. The current SDS for SDA 40B 200 Proof is available as a direct PDF download. Lot-specific Certificates of Analysis are hosted on our COA Search Portal at usalab.com/coa. Just enter your SKU or lot number to pull the document for your QMS records. For pharmaceutical, contract manufacturing, or audited applications, we can also include a printed COA with your shipment on request.
What are the returns and refund terms?
Because ethanol is a regulated hazmat reagent, all sales are final. If your shipment arrives damaged or off-spec, contact us within 48 hours of delivery and we'll make it right: replacement product, credit, or refund, depending on the situation.
For procurement teams
Built for the way you actually buy.
Net terms, academic pricing, tax exemption, custom volumes. The things your finance and QA teams ask about before the PO clears. Each lives in one place.
01
Programs & Terms
Exclusive options for businesses, labs, and academic institutions.
02
Documentation & Compliance
Keep purchasing streamlined for your QMS, audits, and tax filings.
03
Custom Solutions
Production volumes, custom blends, tanks, skids, and integration help.
04
Talk to Sales
We’ll help spec the right size, freight class, and recurring schedule.
Further reading
Related articles to SDA 40B.
Deeper reading on formulation, scale-up, and lab operations from the USA Lab team.
Guide How laboratory mixing works A practical look at mixing fundamentals for cosmetic, fragrance, and extraction formulators working with denatured ethanol. Read article Reference Why scaling lab operations isn’t just about buying bigger equipment What changes as you move from bench to pilot to production, and the ops mistakes that quietly kill margin. Read article Case study What labs get wrong about pilot-scale equipment The decisions that look smart at bench scale and break at 5–55 gallon volumes, with real examples from the field. Read article Packaged in the USA · Supplying the future
