46 CFR § 148.150 - Stowage and segregation for materials of Class 9.

---
identifier: "/us/cfr/t46/s148.150"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 148.150 - Stowage and segregation for materials of Class 9."
title_number: 46
title_name: "Shipping"
section_number: "148.150"
section_name: "Stowage and segregation for materials of Class 9."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "N"
subchapter_name: "DANGEROUS CARGOES"
part_number: "148"
part_name: "CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1602; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; 46 U.S.C. 3306, 5111; 49 U.S.C. 5103; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "75 FR 64591, Oct. 19, 2010, unless otherwise noted."
cfr_part: "148"
---


# 148.150 Stowage and segregation for materials of Class 9.

(a) A bulk solid cargo of Class 9 material (miscellaneous hazardous material) listed in Table 148.10 of this part must be stowed and segregated as required by this section.

(b) Ammonium nitrate fertilizer of Class 9 must be segregated as required for Class 5.1 materials in §§ 148.120 and 148.140 of this part and must be stowed—

(1) Separated by a complete hold or compartment from readily combustible materials, chlorates, hypochlorites, nitrites, permanganates, and fibrous materials (*e.g.,* cotton, jute, sisal, *etc.*);

(2) Clear of all sources of heat, including insulated piping; and

(3) Out of direct contact with metal engine-room boundaries.

(c) Castor beans must be stowed separate from foodstuffs and Class 5.1 materials.

(d) Fish meal must be stowed and segregated as required for Class 4.2 materials in §§ 148.120 and 148.130 of this part. In addition, its temperature at loading must not exceed 35 °C (95 °F), or 5 °C (9 °F) above ambient temperature, whichever is higher.

(e) Sulfur must be stowed and segregated as required under §§ 148.120 and 148.125 of this part for a material of Class 4.1.