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concentrated natural rubber latex latex natural concentrate volatile fatty acid number volatile fatty acid value hevea brasiliensis latex risk information monitoring cashmere knitwear quality c-standard train wireless
GB/T 8292-2008 in English

GB/T 8292-2008 in English

SUPERSEDED

Rubber latex natural concentrate - Determination of volatile fatty acid number

  • Issued on:2008-05-15
  • Implemented on:2008-11-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $70.00
$68.00
Standard No: GB/T 8292-2008
Document status: SUPERSEDED
Superseded by: GB/T 8292-2025 Natural rubber latex concentrate—Determination of volatile fatty acid number
Superseded on: 2025-11-01
Title in English: Rubber latex natural concentrate - Determination of volatile fatty acid number
Title in Chinese: 浓缩天然胶乳 挥发脂肪酸值的测定
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 1~3 business days
Issued on: 2008-05-15
Implemented on: 2008-11-01
Superseding: GB/T 8292-2001 Natural rubber latex concentrate--Determination of volatile fatty acid number
ICS Classification: 83.060-Rubber
Chinese Classification: B72-Forestry chemical raw material
Professional Classification: GB-National Standard
Related Keywords: concentrated natural rubber latex
latex natural concentrate
volatile fatty acid number
volatile fatty acid value
hevea brasiliensis latex
Related Topics: fatty acid
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Determination of acid value
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natural acid pool
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Volatility principle
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fatty acid value
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fat value
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Natural gas volatiles
volatile fatty acids
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continuous distillation
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GB/T 8292-2008
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《GB/T 8292-2008浓缩天然胶乳 挥发脂肪酸值的测定》由TC35(全国橡胶与橡胶制品标准化技术委员会)归口,TC35SC8(全国橡胶与橡胶制品标准化技术委员会天然橡胶分会)执行,主管部门为中国石油和化学工业联合会。
本标准于1987年11月首次发布,2001年7月第一次修订。本标准代替GB/T8292―2001《浓缩天然胶乳 挥发脂肪酸值的测定》。本标准规定了浓缩天然胶乳挥发脂肪酸值的测定方法。本标准适用于巴西橡胶树胶乳生产的浓缩天然胶乳。本标准与GB/T8292―2001相比主要差异如下:
―――删去了ISO 前言,并作了编辑性修改;
―――在6.1、图1中的“蒸汽套蒸馏器”改为:“马氏蒸馏器”;
―――在8.2第一段中“准确加入50mL 硫酸溶液进行酸化”,改为:“准确加入5.0mL 硫酸溶液进
行酸化”;
―――在8.2第三段中“部分关闭蒸汽出口,以3mL/min~5mL/min 的速度连续蒸馏,直到收集
100mL 的蒸馏液为止。”改为:“部分关闭蒸汽出口,使蒸汽转入内管。开始时让蒸汽缓慢通过,然后完全关闭蒸汽出口,以3mL/min~5mL/min的速度连续蒸馏,直到收集100mL 的蒸馏液为止。”


Scope

Warning: Personnel using this standard should be familiar with the operating procedures of formal laboratories. This standard does not intend to address all safety issues that may arise from the use of this standard. Users formulate corresponding safety and health rules and ensure compliance with relevant national laws and regulations. This standard specifies the method for the determination of the volatile fatty acid value of concentrated natural rubber latex. This standard applies to concentrated natural rubber latex produced from Hevea brasiliensis latex.

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