Can I mail or ship bleach, alcohol or citrus cleaners?

Often yes, by ground, if the product is not regulated for transport or qualifies as a "limited quantity." Start with section 14 of your safety data sheet, which states whether the product is a regulated hazardous material and, if so, its UN number, class and packing group. A product may not be regulated at all: Clorox lists its regular bleach as not regulated for DOT below 119 gallons [1]. A corrosive in packing group II ships as a limited quantity only in inner bottles of 1.0 liter or less, in packages of 30 kg or less [2]. A rubbing alcohol cleaner is a flammable liquid, which the Postal Service accepts only by surface, never by air [3].

Step 1: Find out whether the product is regulated

Transport classification is a separate system from the FHSA consumer label and from OSHA's GHS classes. The Department of Transportation's Hazardous Materials Regulations (49 CFR parts 171 to 180) classify by hazard class and packing group (PG I is the most hazardous, PG III the least). The classes that reach cleaners are:

Two published examples show the range:

• 91 percent isopropyl alcohol: UN1219, Class 3, packing group II, on its maker's SDS [6]. A product made mostly of it is a regulated flammable liquid.
• Clorox Regular Bleach2: "NOT REGULATED" for DOT in packages under 119 gallons (450 liters), on its maker's SDS [1]. That is Clorox's classification of its own product, not a rule for every bleach-containing cleaner.

Your product is classified on its own data. If your SDS section 14 says "not regulated," you ship it as ordinary freight (carriers may still ask for the SDS). If it lists a UN number, keep reading. If you wrote the SDS yourself and are unsure of the transport classification, get it checked before you ship; safety data sheets covers who can prepare one.

Step 2: See whether it fits a limited quantity

A limited quantity is a small inner container in a strong outer box, which the regulations relieve from many requirements. For Class 8 corrosives, 49 CFR 173.154(b) allows limited quantities in combination packagings (inner containers inside an outer box) [2]:

Limited quantities of Class 8 are excepted from hazard labeling unless transported by aircraft, and from placarding [2]. They still need the limited quantity marking under 49 CFR part 172 subpart D, as PHMSA has confirmed in an interpretation [7].

A real case shows how strictly the bottle size counts. In 2009 a cleaning products company asked PHMSA whether its 30 percent sodium and potassium hydroxide solutions in 40 fl oz bottles, 12 to a carton, could ship as limited quantities. The answer was no: PG II corrosives need "inner packagings not exceeding 1.0 L (0.3 gallon)," and the 40 fl oz (1.2 L) bottles exceeded it [8]. A quart bottle (946 mL) would have fit.

Flammable liquids and oxidizers have their own limited quantity sections, 49 CFR 173.150(b) and 173.152(b) [10][11]. Each also caps a package at 30 kg (66 lb) gross weight:

Section 173.150(b) opens: "Limited quantities of flammable liquids (Class 3) and combustible liquids are excepted from labeling requirements, unless the material is offered for transportation or transported by aircraft" [10]. Air shipment brings further conditions, including 49 CFR 173.27, so read the current eCFR and your carrier's rules before you ship by air.

ORM-D is gone

Until 2020, many consumer products shipped by ground marked "ORM-D, Consumer Commodity." UPS says ORM-D classifications "were eliminated and no longer used after December 31, 2020," and the change took effect January 1, 2021 under DOT's rulemaking HM-215K [4]. FedEx says the final day to use ORM-D for US highway shipments was December 31, 2020 [5]. Older guides and some supplier blogs still describe ORM-D; ignore them. FedEx tells shippers to use the white square-on-point limited quantity marking for ground shipments, and that orientation arrows are also required for liquids [5].

Step 3: Check the carrier's rules

Carriers can be stricter than DOT, and each has its own acceptance process.

U.S. Postal Service

USPS Publication 52 (the edition posted in 2026) sets what is mailable:

• Corrosives (section 348): mailable domestically only under specific conditions; "All corrosives are prohibited" in international mail [9]. A liquid corrosive mixture "Must be 1 pint (16 oz) or less" and "Must contain 15 percent or less corrosive material"; a solid mixture must be 10 pounds or less per primary receptacle with 10 percent or less corrosive material [9]. Specific limits apply to some acids, such as hydrochloric acid at 10 percent or less [9]. Surface shipments carry the limited quantity surface marking, and no shipping paper is required [9]. USPS Packaging Instruction 8A applies [9]. For liquids it says "Volume per primary receptacle is limited to 16 ounces," requires a secondary packaging tightly sealed with a screw cap of at least one and one half turns, "A noncombustible absorbent material that is capable of taking up all liquid in case of leakage," cushioning around the primary receptacle and a strong outer packaging, and caps each mailpiece at 25 pounds [12]. It permits domestic air or surface transportation when its packaging is met, with the DOT limited quantity air mark (a "Y" in the center) for air and the surface mark for surface; international mail is prohibited [12].
• Flammable and combustible liquids (section 343): USPS treats a liquid with a flash point of not more than 140°F (60°C) as flammable, and one above 140°F and below 200°F (93°C) as combustible; above 200°F it is not regulated [3]. Flammable liquids with a flash point at or below 20°F (minus 7°C) are prohibited; other flammable liquids are mailable by domestic surface transportation only, as a limited quantity, under Packaging Instruction 3A [3]. Domestic air is prohibited for flammable liquids, and international mail prohibits both flammable and combustible liquids [3].

Note that USPS's flammable line (140°F) is higher than the FHSA's (below 100°F) for labeling. Any product with a flash point from 100°F up to 140°F is "combustible" on its consumer label and "flammable" for the mail. The FHSA bands are on is your cleaner a hazardous substance?.

UPS and FedEx Ground

Both accept limited quantity ground shipments under the DOT rules, with the marking described above. FedEx notes that DOT requires shippers of limited quantities to train employees who can affect hazmat safety, and offers courses as part of getting approved to ship [5]. UPS directs shippers to its Limited Quantity Exception page for ground service and its Hazardous Materials Support Center, 1-800-554-9964 [4]. Read each carrier's current requirements and your account terms before the first shipment; a carrier can refuse a package that complies with DOT but not with its tariff.

Training is required

Anyone who prepares a hazardous materials shipment, including a limited quantity, needs hazmat training under DOT rules, as FedEx's notice reminds shippers [5]. That includes you if you pack the boxes. Keep the training record.

Packing so it arrives

The rules set the minimum, and a leaking box is what a carrier notices first.

• Use closures that seal for transit. A trigger sprayer is not a shipping closure. Ship with a sealed cap and the sprayer separate, or use a sprayer with a lockable nozzle and a seal; triggers and sprayers covers the options.
• Follow the packaging instruction your carrier names (USPS Packaging Instruction 3A or 8A, for example) for inner bags, absorbent and cushioning [3][9].
• Fill the box so bottles cannot move, upright, with orientation arrows pointing up for liquids.
• Allow for heat and altitude. A full bottle in a hot truck or at altitude can push liquid past a closure. Leave the headspace your bottle needs (headspace and fill height).
• Put the SDS in your shipping file for every regulated product, and send it to business customers with the first shipment.

Case packs for store orders are on case packing.

A shipping check for each product

1. SDS section 14 read: regulated or not; UN number, class and packing group if regulated.
2. If regulated, inner bottle and package within the limited quantity limits for that class [2].
3. Carrier chosen and its rules met (USPS mailability, surface only for flammables [3]; UPS or FedEx acceptance and account terms).
4. Limited quantity marking and orientation arrows on the box, where required [5].
5. Your hazmat training current.
6. No air services for anything USPS or your carrier restricts to ground.

This summarizes 49 CFR 173.154, PHMSA interpretations and carrier publications as read in October 2026. PHMSA's Hazardous Materials Information Center and each carrier's hazmat desk answer specific questions.

Shipping to stores

A store or distributor order brings case packs, pallets and freight terms, plus documents the buyer expects before accepting the first delivery. Those are on selling to stores and distributors.

References

1. The Clorox Company, Safety Data Sheet: Clorox Regular Bleach2, revision 3, December 9, 2020, section 14. https://www.thecloroxcompany.com/wp-content/uploads/2020/12/US001153-Clorox-Regular-Bleach2_3.pdf
2. Code of Federal Regulations, 49 CFR 173.154, Exceptions for Class 8 (corrosive materials), via Cornell Legal Information Institute, read October 22, 2026. https://www.law.cornell.edu/cfr/text/49/173.154
3. U.S. Postal Service, Publication 52, Hazardous, Restricted, and Perishable Mail, section 343, Flammable and Combustible Liquids (Hazard Class 3), edition posted 2026, read October 22, 2026. https://pe.usps.com/text/pub52/pub52c3_022.htm
4. UPS, ORM-D: Ground Service, hazardous materials guide, undated, read October 22, 2026. https://www.ups.com/us/en/support/shipping-support/shipping-special-care-regulated-items/hazardous-materials-guide/49-cfr-shipping-examples/ground-orm-d
5. FedEx Ground, RegNews: ORM-D Ending Notification, January 5, 2021. https://www.fedex.com/content/dam/fedex/us-united-states/International/images/2021/RegNews_FXG_ORM-D_Ending_Notification.pdf
6. Alliance Chemical, Safety Data Sheet: Isopropyl Alcohol 91%, revised October 21, 2026, section 14. https://docs.alliancechemical.com/sds/isopropyl-alcohol-91
7. Pipeline and Hazardous Materials Safety Administration, Interpretation Response 08-0294, December 30, 2008. https://www.phmsa.dot.gov/node/45641
8. Pipeline and Hazardous Materials Safety Administration, Interpretation Response 09-0204 (Applied Cleaning Technologies, Inc.), October 13, 2009. https://www.phmsa.dot.gov/node/52946
9. U.S. Postal Service, Publication 52, Hazardous, Restricted, and Perishable Mail, section 348, Corrosives (Hazard Class 8), edition posted 2026, read October 22, 2026. https://pe.usps.com/text/pub52/pub52c3_027.htm
10. Code of Federal Regulations, 49 CFR 173.150, Exceptions for Class 3 (flammable and combustible liquids), paragraphs (b) and (f), via Cornell Legal Information Institute, read October 22, 2026. https://www.law.cornell.edu/cfr/text/49/173.150
11. Code of Federal Regulations, 49 CFR 173.152, Exceptions for Division 5.1 (oxidizers) and Division 5.2 (organic peroxides), paragraph (b), via Cornell Legal Information Institute, read October 22, 2026. https://www.law.cornell.edu/cfr/text/49/173.152
12. U.S. Postal Service, Publication 52, Appendix C, USPS Packaging Instruction 8A, current online text (no edition date shown on the page), read October 22, 2026. https://pe.usps.com/text/pub52/pub52apxc_026.htm