Cart (0)
  • No items in cart.
Total
$0
There is a technical issue about last added item. You can click "Report to us" button to let us know and we resolve the issue and return back to you or you can continue without last item via click to continue button.
Home
Content
eLibrary
Filters:
EDITION
to
PUBLISHER
AABC
(1)
AAMI
(353)
ACI
(651)
AECDAILY
(599)
AISC
(58)
ASA
(290)
ASCE
(1042)
ASHRAE
(728)
ASME
(2262)
ASSE
(117)
ASTM
(97896)
AWC
(58)
AWWA
(635)
BHMA
(132)
BICSI
(33)
BIFMA
(28)
BOMA
(20)
BSI
(99791)
CRSI
(18)
IAHSS
(1)
IAPMO
(396)
ICC
(328)
IEC
(10763)
IEEE
(7369)
IES
(252)
ISEA
(21)
ISO
(24378)
Joint Commission
(198)
Joint Commission Int.
(1)
NEMA
(849)
NETA
(7)
NFPA
(1722)
TCNA
(23)
TMS
(19)
USGBC
(28)
WILEY
(4)
 
AR
(6)
AZ
(7)
CA
(128)
CO
(1)
CT
(3)
FL
(58)
ID
(5)
IL
(5)
IN
(1)
KY
(1)
LA
(2)
MI
(28)
MN
(27)
NC
(36)
NJ
(13)
NY
(71)
OH
(24)
OR
(25)
PA
(7)
RI
(8)
SC
(20)
SD
(1)
TX
(3)
VA
(50)
VT
(6)
WA
(34)
CONTENT TYPE
 Act
 Admin Code
 Announcements
 Bill
 Book
 CADD File
 CAN
 CEU
 Charter
 Checklist
 City Code
 Code
 Commentary
 Comprehensive Plan
 Conference Paper
 County Code
 Course
 DHS Documents
 Document
 Errata
 Executive Regulation
 Federal Guideline
 Firm Content
 Guideline
 Handbook
 Interpretation
 Journal
 Land Use and Development
 Law
 Legislative Rule
 Local Amendment
 Local Code
 Local Document
 Local Regulation
 Local Standards
 Manual
 Model Code
 Model Standard
 Notice
 Ordinance
 Other
 Paperback
 PASS
 Periodicals
 PIN
 Plan
 Policy
 Product
 Product - Data Sheet
 Program
 Provisions
 Requirements
 Revisions
 Rules & Regulations
 Standards
 State Amendment
 State Code
 State Manual
 State Plan
 State Standards
 Statute
 Study Guide
 Supplement
 Sustainability
 Technical Bulletin
 All
  • ISO
    ISO 4048:2018 Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content
    Edition: 2018
    $192.38
    / user per year

Content Description

This document specifies a method for the determination of the substances in leather which are soluble in dichloromethane. This method is applicable to all types of leather.

Not all fatty and similar substances can be extracted from leather with organic solvents; they may be in part soluble and partly bound to the leather. On the other hand, the solvent can dissolve non-fatty substances, for example sulfur and impregnants, both of which cause difficulty in the determination of the acid value and saponification value of the fat.

This document includes two techniques for extraction of the fatty substances: 1) extraction using the Soxhlet apparatus; and 2) extraction using a pressurized extraction system.

As the extraction is frequently done in conjunction with determination of the free fatty acid content of the leather, a suitable procedure for determination of the free fatty acids extracted by this method is included.

The apparatus and technique described in this method are also suitable for the extraction by solvents other than dichloromethane (although the temperature conditions may need to be varied for high pressure extraction).



About ISO

ISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better.
GROUPS