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   What is dangerous when wet material?

   • For the purposes of this chapter, dangerous when wet material (Division 4.3) means a material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour, when tested in accordance with UN Manual of Tests and Criteria.

   49 CFR § 173.124 - Class 4, Divisions 4.1, 4.2 and 4.3—Definitions

   www.law.cornell.edu/cfr/text/49/173.124

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   What is a dangerous when wet placard?

   • § 172.548 DANGEROUS WHEN WET placard. (a) Except for size and color, the DANGEROUS WHEN WET placard must be as follows: (b) In addition to complying with § 172.519, the background color on the DANGEROUS WHEN WET placard must be blue. The letters in the words “WHEN WET” must be at least 25 mm (1.0 inches) high.

   49 CFR § 172.548 - DANGEROUS WHEN WET placard

   www.law.cornell.edu/cfr/text/49/172.548

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   What color should a dangerous when wet placard be?

   • For DANGEROUS WHEN WET (Division 4.3) placard any quantity. In addition to complying with 49 CFR §172.519, the background color on the DANGEROUS WHEN WET placard must be blue. The letters in the words “WHEN WET” must be at least 25 mm (1.0 inches) high. The symbol, text, class number and inner border must be white.

   Class 4 – Other Flammable Substances – Placards and ... - HazMat Tool

   www.hazmattool.com/placardslabels.php?i=OtherFlammableSubstances&s=DangerousWhenWet

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   What are the requirements for a “when wet” placard?

   • The letters in the words “WHEN WET” must be at least 25 mm (1.0 inches) high. The symbol, text, class number and inner border must be white. The placards must be as follows:

   Class 4 – Other Flammable Substances – Placards and ... - HazMat Tool

   www.hazmattool.com/placardslabels.php?i=OtherFlammableSubstances&s=DangerousWhenWet

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2. www.law.cornell.edu › cfr › text49 CFR § 173.124 - Class 4, Divisions 4.1, 4.2 and 4.3 ...

   www.law.cornell.edu › cfr › text

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   Apr 10, 2024 · For the purposes of this chapter, dangerous when wet material (Division 4.3) means a material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour, when tested in accordance with UN Manual of Tests and Criteria.

3. en.wikipedia.org › wiki › HAZMAT_Class_4_FlammableHAZMAT Class 4 Flammable solids - Wikipedia

   en.wikipedia.org › wiki › HAZMAT_Class_4_Flammable

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   Dangerous when wet material is material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 liter per kilogram of the material, per hour, when tested in accordance with the UN Manual of Tests and Criteria.

4. Videos

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     Labelmaster ZVR23 Dangerous When Wet Hazmat Placard, Blank, Removable Vinyl (Pack of 25)

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     Labelmaster ZMG23 Dangerous When Wet Hazmat Placard, Worded, Magnetic (Pack of 25)

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5. www.hazmattool.com › placardslabelsClass 4 – Other Flammable Substances - HazMat Tool

   www.hazmattool.com › placardslabels

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   For DANGEROUS WHEN WET (Division 4.3) placard any quantity. In addition to complying with 49 CFR §172.519, the background color on the DANGEROUS WHEN WET placard must be blue. The letters in the words “WHEN WET” must be at least 25 mm (1.0 inches) high.

6. www.law.cornell.edu › cfr › text49 CFR § 172.548 - DANGEROUS WHEN WET placard.

   www.law.cornell.edu › cfr › text

   • Cached

   CFR. prev | next. § 172.548 DANGEROUS WHEN WET placard. (a) Except for size and color, the DANGEROUS WHEN WET placard must be as follows: (b) In addition to complying with § 172.519, the background color on the DANGEROUS WHEN WET placard must be blue. The letters in the words “WHEN WET” must be at least 25 mm (1.0 inches) high.

7. www.phmsa.dot.gov › sites › phmsaDOT CHART 16 Hazardous Materials Markings,Labeling and ...

   www.phmsa.dot.gov › sites › phmsa

   Hazardous Materials Warning Labels. Actual label size: at least 100 mm (3.9 inches) on all sides. CLASS 1 Explosives: Divisions 1.1, 1.2, 1.3, 1.4, 1.5, 1.6. CLASS 2 Gases: Divisions 2.1, 2.2, 2.3. CLASS 3 Flammable Liquid. CLASS 4 Flammable Solid, Spontaneously Combustible, and Dangerous When Wet: Divisions 4.1, 4.2, 4.3.

   • File Size: 710KB

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8. li-public.fmcsa.dot.gov › mcmisfile › hm_div_4hm_div_4-3 - Transportation

   li-public.fmcsa.dot.gov › mcmisfile › hm_div_4

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   Dangerous when wet material (Division 4.3) means a material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 liter per kilogram of the material, per hour, when tested in accordance with UN Manual of Tests and Criteria.

9. arcb.com › blog › understanding-hazmat-placardsUnderstanding HAZMAT Placards | ArcBest

   arcb.com › blog › understanding-hazmat-placards

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   2.1: Flammable gases. 2.2: Nonflammable gases. 2.3: Toxic gases. Class 3 — Flammable and combustible liquids. Class 4 — Flammable materials. 4.1: Flammable solids. 4.2: Spontaneously combustible. 4.3: Dangerous when wet. Class 5 — Oxidizer and organic peroxide. 5.1: Oxidizing substances. 5.2: Organic peroxides. Class 6 — Poisons.