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(1) An aerosol must be assigned to Division 2.1 if the contents include 85% by mass or more flammable components and the chemical heat of combustion is 30 kJ/g or more;

(g) Cryogenic liquid. A cryogenic liquid means a refrigerated liquefied gas having a boiling point colder than −90 °C (−130 °F) at 101.3 kPa (14.7 psia) absolute. A material meeting this definition is subject to requirements of this subchapter without regard to whether it meets the definition of a non-flammable, non-poisonous compressed gas in paragraph (b) of this section.

Flammable gasFiggerits

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(b) Division 2.2 (non-flammable, nonpoisonous compressed gas—including compressed gas, liquefied gas, pressurized cryogenic gas, compressed gas in solution, asphyxiant gas and oxidizing gas). For the purpose of this subchapter, a non-flammable, nonpoisonous compressed gas (Division 2.2) means any material (or mixture) which—

Looped end mops are a lot like the cut-end mops, but the strings are looped instead of cut and attached. They’re excellent for cleaning, and the mop head itself is usually easy to clean.

Spray mops have a built-in area that holds a cleaning solution or water. When mopping, you press the button or squeeze the trigger to spray it on the floor. It’s important to use the right chemicals for your floor type.

(i) Service pressure. The term service pressure means the authorized pressure marking on the packaging. For example, for a cylinder marked “DOT 3A1800”, the service pressure is 12410 kPa (1800 psig).

(7) Flammable components are Class 3 flammable liquids, Division 4.1 flammable solids, or Division 2.1 flammable gases. The chemical heat of combustion must be determined in accordance with the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter).

Bristles for brooms are made from various natural and synthetic materials, including horsehair, polyethylene, corn and acrylic. The bristle type can make a difference in the broom’s effectiveness on certain surfaces and kinds of debris.

Flammable gasexample

Cut-end mops are the typical movie mops, with cut cotton strings tied together around a handle. This style can be difficult to wring out, making keeping it sanitary difficult, but it is known for cleaning well.

Flammable gassymbol

Mops are considered essential for washing large floor areas. There’s a wide variety of mop types, so the best one depends on the job you’re tackling. From dry mopping to wet mopping, and everything in between, let’s explore the options.

(c) Division 2.3 (Gas poisonous by inhalation). For the purpose of this subchapter, a gas poisonous by inhalation (Division 2.3) means a material which is a gas at 20 °C (68 °F) or less and a pressure of 101.3 kPa (14.7 psia) (a material which has a boiling point of 20 °C (68 °F) or less at 101.3 kPa (14.7 psia)) and which—

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(h) Flammable range. The term flammable range means the difference between the minimum and maximum volume percentages of the material in air that forms a flammable mixture.

Besides the main types of brooms, there are also specialty designs that focus on scrubbing, commercial cleaning and more.

(k) For Division 2.2 gases, the oxidizing ability shall be determined by tests or by calculation in accordance with ISO 10156:2017(E) (IBR, see § 171.7 of this subchapter).

Strip mops don’t use strings, but instead use strips of material as string substitutes. They don’t do well on large surfaces, but they can be used dry or wet. And like some other types, the mop head may be detachable.

Angle broom: If you’re looking to sweep small areas with obstacles and furniture, the best type of indoor broom is an angle broom. As the name suggests, the bristles meet the floor at an angle, and the angled point helps tackle corners. They’re designed for everyday sweeping of smaller debris commonly found in kitchens and other rooms in a home.

Keep in mind that mop heads can be made of almost any type of material. Many types of mops can be found using a variety of materials, while others are exclusively one type. The most popular materials for traditional mops include rayon, cotton, sponge/cellulose, synthetic and polyester cotton blend.

Brooms are a staple cleaning tool in homes and businesses. The type of broom you need depends on the project you’re undertaking. Choose from four basic types: angle brooms, push brooms, corn brooms and whisk brooms.

For Federal Register citations affecting § 173.115, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

String mop: This is the classic mop, and it’s popular for good reason. String mops fit into corners well, and they’re usually made with highly absorbent materials. There are a few common varieties of mops that fall into this category.

Flammablegases list

Corn broom: These classics are versatile and useful both indoors and out. Unlike most other brooms, their long bristles are stitched together in a bundle. The bristles are also thicker than other brooms. Together, these features make corn brooms flexible yet strong enough for almost any task.

Spin mops work together with a bucket that’s usually included. The bucket has a device that spins the wet mop, wringing out the water into the bucket. The mop head may be detachable to make it easy to sanitize.

(j) Refrigerant gas or Dispersant gas. The terms Refrigerant gas and Dispersant gas apply to all nonpoisonous refrigerant gases; dispersant gases (fluorocarbons) listed in § 172.101 of this subchapter and §§ 173.304, 173.314(c), 173.315(a), and 173.315(h) and mixtures thereof; and any other compressed gas having a vapor pressure not exceeding 260 psia at 54 °C(130 °F), used only as a refrigerant, dispersant, or blowing agent.

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Flammable gasin chemistry

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Sponge mop: Sponge mops have an absorbent sponge and usually a wringer, making them especially useful for cleaning large areas. Additionally, they can be used to clean up spilled liquids. Sponge mops can also include a brush to help scrub hard surfaces, removing stuck-on stains and debris.

The Home Depot offers a wide selection of mops and brooms that will help you keep your home, office or garage clean and tidy. Use The Home Depot Mobile App to find what you need.

Whisk broom: These sweeping tools have no handle, and they’re small and short for easy portability. They are used for small spaces or for small amounts of debris. They usually have stitched bundles of bristles like corn brooms do.

(2) In the absence of adequate data on human toxicity, is presumed to be toxic to humans because when tested on laboratory animals it has an LC50 value of not more than 5000 mL/m3 (see § 173.116(a) of this subpart for assignment of Hazard Zones A, B, C or D). LC50 values for mixtures may be determined using the formula in § 173.133(b)(1)(i) or CGA P-20 (IBR, see § 171.7 of this subchapter).

Push broom: Designed for effective, heavy-duty sweeping of large spaces, push brooms feature a large, wide head. As a result, they can cover more area in a shorter time than other types, piling up both small and large pieces of debris as you push. Use this type of broom for sweeping out garages, clearing leaves on driveways or decks and cleaning other big, open spaces. You won’t tire as easily because you aren’t sweeping back and forth.

Choose a broom or mop based on your cleaning needs. And consider that having more than one is recommended. Having the right types of brooms and mops helps manage household chores. Also, some people choose to have a broom or mop designated for certain areas in order to limit the amount of debris that is transferred from one area to another.

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Mostflammable gaslist

(d) Non-liquefied compressed gas. A gas, which when packaged under pressure for transportation is entirely gaseous at −50 °C (−58 °F) with a critical temperature less than or equal to −50 °C (−58 °F), is considered to be a non-liquefied compressed gas.

(1) Exerts in the packaging a gauge pressure of 200 kPa (29.0 psig/43.8 psia) or greater at 20 °C (68 °F), is a liquefied gas or is a cryogenic liquid, and

(m) Adsorbed gas. A gas which when packaged for transport is adsorbed onto a solid porous material resulting in an internal receptacle pressure of less than 101.3 kPa at 20 °C and less than 300 kPa at 50 °C.

(5) When the contents are classified as Division 6.1, PG III or Class 8, PG II or III, the aerosol must be assigned a subsidiary hazard of Division 6.1 or Class 8, as appropriate.

(2) Has a flammable range at 101.3 kPa (14.7 psia) with air of at least 12 percent regardless of the lower limit. Except for aerosols, the limits specified in paragraphs (a)(1) and (a)(2) of this section shall be determined at 101.3 kPa (14.7 psia) of pressure and a temperature of 20 °C (68 °F) in accordance with the ASTM E681-85, Standard Test Method for Concentration Limits of Flammability of Chemicals or other equivalent method approved by the Associate Administrator. The flammability of aerosols is determined by the tests specified in paragraph (l) of this section.

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Mop varieties can also be even more specialized. Steam mops, robot mops and other vacuum-mop combinations are examples of the wide variety of available mops.

The handle of your broom is also important to consider. Broom handles can be made from wood, plastic, fiberglass or metal, and they come in varying lengths.

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Flammable gaspropane

(a) Division 2.1 (Flammable gas). For the purpose of this subchapter, a flammable gas (Division 2.1) means any material which is a gas at 20 °C (68 °F) or less and 101.3 kPa (14.7 psia) of pressure (a material which has a boiling point of 20 °C (68 °F) or less at 101.3 kPa (14.7 psia)) which—

The best mops and brooms for cleaning come in a variety of styles and are constructed from a diverse range of materials. Some types are best suited for indoor use in kitchens, hallways and other areas that contain hard floors. Others are specially designed for heavy-duty use in workshops, garages and commercial locations.

(2) An aerosol must be assigned to Division 2.2 if the contents contain 1% by mass or less flammable components and the heat of combustion is less than 20 kJ/g.

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Dust mops are considered the best dry mop for attracting and collecting dirt, making clean up a breeze. They have a reusable soft cover made of cotton or microfiber that captures dirt. Dust mops are best suited for surfaces that require a gentle touch, such as hardwoods.

Nonflammable Gasexamples

Flat mop: This type of mop is excellent for hardwood floors and vinyl surfaces. It has a flat, rectangular mop head that often attaches to the handle on a swivel for easy cleaning. Flat mops require the attachment of either a disposable or reusable pad to the mop head. Besides the regular flat mop, there are also two specialty mops that fall into this category.

(f) Compressed gas in solution. A compressed gas in solution is a non-liquefied compressed gas which is dissolved in a solvent.

(6) Substances of Division 6.1, PG I or II, and substances of Class 8, PG I are forbidden from transportation in an aerosol container.

(3) Aerosols not meeting the provisions of paragraphs (l)(1) or (1)(2) of this section must be classed in accordance with the appropriate tests of the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter). An aerosol which was tested in accordance with the requirements of this subchapter in effect on December 31, 2005, is not required to be retested.

(e) Liquefied compressed gas. A gas, which when packaged under pressure for transportation is partially liquid at temperatures above −50 °C (−58 °F), is considered to be a liquefied compressed gas. Gas mixtures with component(s) that are liquefied gases may be described using the hazardous materials description of a compressed gas in the Hazardous Materials Table in § 172.101 of this subchapter when the partial pressure(s) of the liquefied gas component(s) in the mixture are reduced so that the mixture is entirely in the gas phase at 20 °C (68 °F). A liquefied compressed gas is further categorized as follows: